128979760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2531}}^1$

素因数の和:2571

約数の個数: 120

約数和(自身を含む): 375819696

約数和(自身を除く): 246839936

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 455, 490, 520, 560, 637, 728, 784, 910, 980, 1040, 1274, 1456, 1820, 1960, 2531, 2548, 3185, 3640, 3920, 5062, 5096, 6370, 7280, 10124, 10192, 12655, 12740, 17717, 20248, 25310, 25480, 32903, 35434, 40496, 50620, 50960, 65806, 70868, 88585, 101240, 124019, 131612, 141736, 164515, 177170, 202480, 230321, 248038, 263224, 283472, 329030, 354340, 460642, 496076, 526448, 620095, 658060, 708680, 921284, 992152, 1151605, 1240190, 1316120, 1417360, 1612247, 1842568, 1984304, 2303210, 2480380, 2632240, 3224494, 3685136, 4606420, 4960760, 6448988, 8061235, 9212840, 9921520, 12897976, 16122470, 18425680, 25795952, 32244940, 64489880, 128979760]

約数ペア:

[(1, 128979760), (2, 64489880), (4, 32244940), (5, 25795952), (7, 18425680), (8, 16122470), (10, 12897976), (13, 9921520), (14, 9212840), (16, 8061235), (20, 6448988), (26, 4960760), (28, 4606420), (35, 3685136), (40, 3224494), (49, 2632240), (52, 2480380), (56, 2303210), (65, 1984304), (70, 1842568), (80, 1612247), (91, 1417360), (98, 1316120), (104, 1240190), (112, 1151605), (130, 992152), (140, 921284), (182, 708680), (196, 658060), (208, 620095), (245, 526448), (260, 496076), (280, 460642), (364, 354340), (392, 329030), (455, 283472), (490, 263224), (520, 248038), (560, 230321), (637, 202480), (728, 177170), (784, 164515), (910, 141736), (980, 131612), (1040, 124019), (1274, 101240), (1456, 88585), (1820, 70868), (1960, 65806), (2531, 50960), (2548, 50620), (3185, 40496), (3640, 35434), (3920, 32903), (5062, 25480), (5096, 25310), (6370, 20248), (7280, 17717), (10124, 12740), (10192, 12655)]