64789240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{523}}^1$

素因数の和:716

約数の個数: 64

約数和(自身を含む): 154684800

約数和(自身を除く): 89895560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 163, 190, 326, 380, 523, 652, 760, 815, 1046, 1304, 1630, 2092, 2615, 3097, 3260, 4184, 5230, 6194, 6520, 9937, 10460, 12388, 15485, 19874, 20920, 24776, 30970, 39748, 49685, 61940, 79496, 85249, 99370, 123880, 170498, 198740, 340996, 397480, 426245, 681992, 852490, 1619731, 1704980, 3239462, 3409960, 6478924, 8098655, 12957848, 16197310, 32394620, 64789240]

約数ペア:

[(1, 64789240), (2, 32394620), (4, 16197310), (5, 12957848), (8, 8098655), (10, 6478924), (19, 3409960), (20, 3239462), (38, 1704980), (40, 1619731), (76, 852490), (95, 681992), (152, 426245), (163, 397480), (190, 340996), (326, 198740), (380, 170498), (523, 123880), (652, 99370), (760, 85249), (815, 79496), (1046, 61940), (1304, 49685), (1630, 39748), (2092, 30970), (2615, 24776), (3097, 20920), (3260, 19874), (4184, 15485), (5230, 12388), (6194, 10460), (6520, 9937)]