20923760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:127

約数の個数: 160

約数和(自身を含む): 59996160

約数和(自身を除く): 39072400

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 31, 40, 44, 52, 55, 59, 62, 65, 80, 88, 104, 110, 118, 124, 130, 143, 155, 176, 208, 220, 236, 248, 260, 286, 295, 310, 341, 403, 440, 472, 496, 520, 572, 590, 620, 649, 682, 715, 767, 806, 880, 944, 1040, 1144, 1180, 1240, 1298, 1364, 1430, 1534, 1612, 1705, 1829, 2015, 2288, 2360, 2480, 2596, 2728, 2860, 3068, 3224, 3245, 3410, 3658, 3835, 4030, 4433, 4720, 5192, 5456, 5720, 6136, 6448, 6490, 6820, 7316, 7670, 8060, 8437, 8866, 9145, 10384, 11440, 12272, 12980, 13640, 14632, 15340, 16120, 16874, 17732, 18290, 20119, 22165, 23777, 25960, 27280, 29264, 30680, 32240, 33748, 35464, 36580, 40238, 42185, 44330, 47554, 51920, 61360, 67496, 70928, 73160, 80476, 84370, 88660, 95108, 100595, 118885, 134992, 146320, 160952, 168740, 177320, 190216, 201190, 237770, 261547, 321904, 337480, 354640, 380432, 402380, 475540, 523094, 674960, 804760, 951080, 1046188, 1307735, 1609520, 1902160, 2092376, 2615470, 4184752, 5230940, 10461880, 20923760]

約数ペア:

[(1, 20923760), (2, 10461880), (4, 5230940), (5, 4184752), (8, 2615470), (10, 2092376), (11, 1902160), (13, 1609520), (16, 1307735), (20, 1046188), (22, 951080), (26, 804760), (31, 674960), (40, 523094), (44, 475540), (52, 402380), (55, 380432), (59, 354640), (62, 337480), (65, 321904), (80, 261547), (88, 237770), (104, 201190), (110, 190216), (118, 177320), (124, 168740), (130, 160952), (143, 146320), (155, 134992), (176, 118885), (208, 100595), (220, 95108), (236, 88660), (248, 84370), (260, 80476), (286, 73160), (295, 70928), (310, 67496), (341, 61360), (403, 51920), (440, 47554), (472, 44330), (496, 42185), (520, 40238), (572, 36580), (590, 35464), (620, 33748), (649, 32240), (682, 30680), (715, 29264), (767, 27280), (806, 25960), (880, 23777), (944, 22165), (1040, 20119), (1144, 18290), (1180, 17732), (1240, 16874), (1298, 16120), (1364, 15340), (1430, 14632), (1534, 13640), (1612, 12980), (1705, 12272), (1829, 11440), (2015, 10384), (2288, 9145), (2360, 8866), (2480, 8437), (2596, 8060), (2728, 7670), (2860, 7316), (3068, 6820), (3224, 6490), (3245, 6448), (3410, 6136), (3658, 5720), (3835, 5456), (4030, 5192), (4433, 4720)]