128628920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:158

約数の個数: 192

約数和(自身を含む): 364435200

約数和(自身を除く): 235806280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 49, 56, 58, 62, 70, 73, 98, 116, 124, 140, 145, 146, 155, 196, 203, 217, 232, 245, 248, 280, 290, 292, 310, 365, 392, 406, 434, 490, 511, 580, 584, 620, 730, 812, 868, 899, 980, 1015, 1022, 1085, 1160, 1240, 1421, 1460, 1519, 1624, 1736, 1798, 1960, 2030, 2044, 2117, 2170, 2263, 2555, 2842, 2920, 3038, 3577, 3596, 4060, 4088, 4234, 4340, 4495, 4526, 5110, 5684, 6076, 6293, 7105, 7154, 7192, 7595, 8120, 8468, 8680, 8990, 9052, 10220, 10585, 11315, 11368, 12152, 12586, 14210, 14308, 14819, 15190, 15841, 16936, 17885, 17980, 18104, 20440, 21170, 22630, 25172, 28420, 28616, 29638, 30380, 31465, 31682, 35770, 35960, 42340, 44051, 45260, 50344, 56840, 59276, 60760, 62930, 63364, 65627, 71540, 74095, 79205, 84680, 88102, 90520, 103733, 110887, 118552, 125860, 126728, 131254, 143080, 148190, 158410, 176204, 207466, 220255, 221774, 251720, 262508, 296380, 316820, 328135, 352408, 414932, 440510, 443548, 459389, 518665, 525016, 554435, 592760, 633640, 656270, 829864, 881020, 887096, 918778, 1037330, 1108870, 1312540, 1762040, 1837556, 2074660, 2217740, 2296945, 2625080, 3215723, 3675112, 4149320, 4435480, 4593890, 6431446, 9187780, 12862892, 16078615, 18375560, 25725784, 32157230, 64314460, 128628920]

約数ペア:

[(1, 128628920), (2, 64314460), (4, 32157230), (5, 25725784), (7, 18375560), (8, 16078615), (10, 12862892), (14, 9187780), (20, 6431446), (28, 4593890), (29, 4435480), (31, 4149320), (35, 3675112), (40, 3215723), (49, 2625080), (56, 2296945), (58, 2217740), (62, 2074660), (70, 1837556), (73, 1762040), (98, 1312540), (116, 1108870), (124, 1037330), (140, 918778), (145, 887096), (146, 881020), (155, 829864), (196, 656270), (203, 633640), (217, 592760), (232, 554435), (245, 525016), (248, 518665), (280, 459389), (290, 443548), (292, 440510), (310, 414932), (365, 352408), (392, 328135), (406, 316820), (434, 296380), (490, 262508), (511, 251720), (580, 221774), (584, 220255), (620, 207466), (730, 176204), (812, 158410), (868, 148190), (899, 143080), (980, 131254), (1015, 126728), (1022, 125860), (1085, 118552), (1160, 110887), (1240, 103733), (1421, 90520), (1460, 88102), (1519, 84680), (1624, 79205), (1736, 74095), (1798, 71540), (1960, 65627), (2030, 63364), (2044, 62930), (2117, 60760), (2170, 59276), (2263, 56840), (2555, 50344), (2842, 45260), (2920, 44051), (3038, 42340), (3577, 35960), (3596, 35770), (4060, 31682), (4088, 31465), (4234, 30380), (4340, 29638), (4495, 28616), (4526, 28420), (5110, 25172), (5684, 22630), (6076, 21170), (6293, 20440), (7105, 18104), (7154, 17980), (7192, 17885), (7595, 16936), (8120, 15841), (8468, 15190), (8680, 14819), (8990, 14308), (9052, 14210), (10220, 12586), (10585, 12152), (11315, 11368)]