20244375

素因数分解:

$3^2\times 5^4\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 60

約数和(自身を含む): 37769160

約数和(自身を除く): 17524785

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 61, 75, 125, 177, 183, 225, 295, 305, 375, 531, 549, 625, 885, 915, 1125, 1475, 1525, 1875, 2655, 2745, 3599, 4425, 4575, 5625, 7375, 7625, 10797, 13275, 13725, 17995, 22125, 22875, 32391, 36875, 38125, 53985, 66375, 68625, 89975, 110625, 114375, 161955, 269925, 331875, 343125, 449875, 809775, 1349625, 2249375, 4048875, 6748125, 20244375]

約数ペア:

[(1, 20244375), (3, 6748125), (5, 4048875), (9, 2249375), (15, 1349625), (25, 809775), (45, 449875), (59, 343125), (61, 331875), (75, 269925), (125, 161955), (177, 114375), (183, 110625), (225, 89975), (295, 68625), (305, 66375), (375, 53985), (531, 38125), (549, 36875), (625, 32391), (885, 22875), (915, 22125), (1125, 17995), (1475, 13725), (1525, 13275), (1875, 10797), (2655, 7625), (2745, 7375), (3599, 5625), (4425, 4575)]