64904840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1621}}^1$

素因数の和:1663

約数の個数: 128

約数和(自身を含む): 196197120

約数和(自身を除く): 131292280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1621, 1820, 2002, 2860, 3080, 3242, 3640, 4004, 5005, 5720, 6484, 8008, 8105, 10010, 11347, 12968, 16210, 17831, 20020, 21073, 22694, 32420, 35662, 40040, 42146, 45388, 56735, 64840, 71324, 84292, 89155, 90776, 105365, 113470, 124817, 142648, 147511, 168584, 178310, 210730, 226940, 231803, 249634, 295022, 356620, 421460, 453880, 463606, 499268, 590044, 624085, 713240, 737555, 842920, 927212, 998536, 1159015, 1180088, 1248170, 1475110, 1622621, 1854424, 2318030, 2496340, 2950220, 3245242, 4636060, 4992680, 5900440, 6490484, 8113105, 9272120, 12980968, 16226210, 32452420, 64904840]

約数ペア:

[(1, 64904840), (2, 32452420), (4, 16226210), (5, 12980968), (7, 9272120), (8, 8113105), (10, 6490484), (11, 5900440), (13, 4992680), (14, 4636060), (20, 3245242), (22, 2950220), (26, 2496340), (28, 2318030), (35, 1854424), (40, 1622621), (44, 1475110), (52, 1248170), (55, 1180088), (56, 1159015), (65, 998536), (70, 927212), (77, 842920), (88, 737555), (91, 713240), (104, 624085), (110, 590044), (130, 499268), (140, 463606), (143, 453880), (154, 421460), (182, 356620), (220, 295022), (260, 249634), (280, 231803), (286, 226940), (308, 210730), (364, 178310), (385, 168584), (440, 147511), (455, 142648), (520, 124817), (572, 113470), (616, 105365), (715, 90776), (728, 89155), (770, 84292), (910, 71324), (1001, 64840), (1144, 56735), (1430, 45388), (1540, 42146), (1621, 40040), (1820, 35662), (2002, 32420), (2860, 22694), (3080, 21073), (3242, 20020), (3640, 17831), (4004, 16210), (5005, 12968), (5720, 11347), (6484, 10010), (8008, 8105)]