18511220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1453}}^1$

素因数の和:1489

約数の個数: 72

約数和(自身を含む): 48732264

約数和(自身を除く): 30221044

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1453, 1820, 2548, 2906, 3185, 5812, 6370, 7265, 10171, 12740, 14530, 18889, 20342, 29060, 37778, 40684, 50855, 71197, 75556, 94445, 101710, 132223, 142394, 188890, 203420, 264446, 284788, 355985, 377780, 528892, 661115, 711970, 925561, 1322230, 1423940, 1851122, 2644460, 3702244, 4627805, 9255610, 18511220]

約数ペア:

[(1, 18511220), (2, 9255610), (4, 4627805), (5, 3702244), (7, 2644460), (10, 1851122), (13, 1423940), (14, 1322230), (20, 925561), (26, 711970), (28, 661115), (35, 528892), (49, 377780), (52, 355985), (65, 284788), (70, 264446), (91, 203420), (98, 188890), (130, 142394), (140, 132223), (182, 101710), (196, 94445), (245, 75556), (260, 71197), (364, 50855), (455, 40684), (490, 37778), (637, 29060), (910, 20342), (980, 18889), (1274, 14530), (1453, 12740), (1820, 10171), (2548, 7265), (2906, 6370), (3185, 5812)]