18687640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 45043200

約数和(自身を除く): 26355560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 367, 380, 536, 670, 734, 760, 1273, 1340, 1468, 1835, 2546, 2680, 2936, 3670, 5092, 6365, 6973, 7340, 10184, 12730, 13946, 14680, 24589, 25460, 27892, 34865, 49178, 50920, 55784, 69730, 98356, 122945, 139460, 196712, 245890, 278920, 467191, 491780, 934382, 983560, 1868764, 2335955, 3737528, 4671910, 9343820, 18687640]

約数ペア:

[(1, 18687640), (2, 9343820), (4, 4671910), (5, 3737528), (8, 2335955), (10, 1868764), (19, 983560), (20, 934382), (38, 491780), (40, 467191), (67, 278920), (76, 245890), (95, 196712), (134, 139460), (152, 122945), (190, 98356), (268, 69730), (335, 55784), (367, 50920), (380, 49178), (536, 34865), (670, 27892), (734, 25460), (760, 24589), (1273, 14680), (1340, 13946), (1468, 12730), (1835, 10184), (2546, 7340), (2680, 6973), (2936, 6365), (3670, 5092)]