18963750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:427

約数の個数: 80

約数和(自身を含む): 51171120

約数和(自身を除く): 32207370

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 389, 390, 625, 650, 750, 778, 975, 1167, 1250, 1625, 1875, 1945, 1950, 2334, 3250, 3750, 3890, 4875, 5057, 5835, 8125, 9725, 9750, 10114, 11670, 15171, 16250, 19450, 24375, 25285, 29175, 30342, 48625, 48750, 50570, 58350, 75855, 97250, 126425, 145875, 151710, 243125, 252850, 291750, 379275, 486250, 632125, 729375, 758550, 1264250, 1458750, 1896375, 3160625, 3792750, 6321250, 9481875, 18963750]

約数ペア:

[(1, 18963750), (2, 9481875), (3, 6321250), (5, 3792750), (6, 3160625), (10, 1896375), (13, 1458750), (15, 1264250), (25, 758550), (26, 729375), (30, 632125), (39, 486250), (50, 379275), (65, 291750), (75, 252850), (78, 243125), (125, 151710), (130, 145875), (150, 126425), (195, 97250), (250, 75855), (325, 58350), (375, 50570), (389, 48750), (390, 48625), (625, 30342), (650, 29175), (750, 25285), (778, 24375), (975, 19450), (1167, 16250), (1250, 15171), (1625, 11670), (1875, 10114), (1945, 9750), (1950, 9725), (2334, 8125), (3250, 5835), (3750, 5057), (3890, 4875)]