19974375

素因数分解:

$3^2\times 5^4\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:146

約数の個数: 60

約数和(自身を含む): 37281816

約数和(自身を除く): 17307441

約数列:

[1, 3, 5, 9, 15, 25, 45, 53, 67, 75, 125, 159, 201, 225, 265, 335, 375, 477, 603, 625, 795, 1005, 1125, 1325, 1675, 1875, 2385, 3015, 3551, 3975, 5025, 5625, 6625, 8375, 10653, 11925, 15075, 17755, 19875, 25125, 31959, 33125, 41875, 53265, 59625, 75375, 88775, 99375, 125625, 159795, 266325, 298125, 376875, 443875, 798975, 1331625, 2219375, 3994875, 6658125, 19974375]

約数ペア:

[(1, 19974375), (3, 6658125), (5, 3994875), (9, 2219375), (15, 1331625), (25, 798975), (45, 443875), (53, 376875), (67, 298125), (75, 266325), (125, 159795), (159, 125625), (201, 99375), (225, 88775), (265, 75375), (335, 59625), (375, 53265), (477, 41875), (603, 33125), (625, 31959), (795, 25125), (1005, 19875), (1125, 17755), (1325, 15075), (1675, 11925), (1875, 10653), (2385, 8375), (3015, 6625), (3551, 5625), (3975, 5025)]