19824975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 38649312

約数和(自身を除く): 18824337

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 71, 73, 75, 85, 153, 213, 219, 225, 255, 355, 365, 425, 639, 657, 765, 1065, 1095, 1207, 1241, 1275, 1775, 1825, 3195, 3285, 3621, 3723, 3825, 5183, 5325, 5475, 6035, 6205, 10863, 11169, 15549, 15975, 16425, 18105, 18615, 25915, 30175, 31025, 46647, 54315, 55845, 77745, 88111, 90525, 93075, 129575, 233235, 264333, 271575, 279225, 388725, 440555, 792999, 1166175, 1321665, 2202775, 3964995, 6608325, 19824975]

約数ペア:

[(1, 19824975), (3, 6608325), (5, 3964995), (9, 2202775), (15, 1321665), (17, 1166175), (25, 792999), (45, 440555), (51, 388725), (71, 279225), (73, 271575), (75, 264333), (85, 233235), (153, 129575), (213, 93075), (219, 90525), (225, 88111), (255, 77745), (355, 55845), (365, 54315), (425, 46647), (639, 31025), (657, 30175), (765, 25915), (1065, 18615), (1095, 18105), (1207, 16425), (1241, 15975), (1275, 15549), (1775, 11169), (1825, 10863), (3195, 6205), (3285, 6035), (3621, 5475), (3723, 5325), (3825, 5183)]