20412960

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:127

約数の個数: 144

約数和(自身を含む): 68693184

約数和(自身を除く): 48280224

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 43, 46, 48, 60, 69, 80, 86, 92, 96, 115, 120, 129, 138, 160, 172, 184, 215, 230, 240, 258, 276, 344, 345, 368, 430, 460, 480, 516, 552, 645, 688, 690, 736, 860, 920, 989, 1032, 1104, 1290, 1376, 1380, 1720, 1840, 1849, 1978, 2064, 2208, 2580, 2760, 2967, 3440, 3680, 3698, 3956, 4128, 4945, 5160, 5520, 5547, 5934, 6880, 7396, 7912, 9245, 9890, 10320, 11040, 11094, 11868, 14792, 14835, 15824, 18490, 19780, 20640, 22188, 23736, 27735, 29584, 29670, 31648, 36980, 39560, 42527, 44376, 47472, 55470, 59168, 59340, 73960, 79120, 85054, 88752, 94944, 110940, 118680, 127581, 147920, 158240, 170108, 177504, 212635, 221880, 237360, 255162, 295840, 340216, 425270, 443760, 474720, 510324, 637905, 680432, 850540, 887520, 1020648, 1275810, 1360864, 1701080, 2041296, 2551620, 3402160, 4082592, 5103240, 6804320, 10206480, 20412960]

約数ペア:

[(1, 20412960), (2, 10206480), (3, 6804320), (4, 5103240), (5, 4082592), (6, 3402160), (8, 2551620), (10, 2041296), (12, 1701080), (15, 1360864), (16, 1275810), (20, 1020648), (23, 887520), (24, 850540), (30, 680432), (32, 637905), (40, 510324), (43, 474720), (46, 443760), (48, 425270), (60, 340216), (69, 295840), (80, 255162), (86, 237360), (92, 221880), (96, 212635), (115, 177504), (120, 170108), (129, 158240), (138, 147920), (160, 127581), (172, 118680), (184, 110940), (215, 94944), (230, 88752), (240, 85054), (258, 79120), (276, 73960), (344, 59340), (345, 59168), (368, 55470), (430, 47472), (460, 44376), (480, 42527), (516, 39560), (552, 36980), (645, 31648), (688, 29670), (690, 29584), (736, 27735), (860, 23736), (920, 22188), (989, 20640), (1032, 19780), (1104, 18490), (1290, 15824), (1376, 14835), (1380, 14792), (1720, 11868), (1840, 11094), (1849, 11040), (1978, 10320), (2064, 9890), (2208, 9245), (2580, 7912), (2760, 7396), (2967, 6880), (3440, 5934), (3680, 5547), (3698, 5520), (3956, 5160), (4128, 4945)]