19040775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 34581120

約数和(自身を除く): 15540345

約数列:

[1, 3, 5, 13, 15, 25, 39, 59, 65, 75, 177, 195, 295, 325, 331, 767, 885, 975, 993, 1475, 1655, 2301, 3835, 4303, 4425, 4965, 8275, 11505, 12909, 19175, 19529, 21515, 24825, 57525, 58587, 64545, 97645, 107575, 253877, 292935, 322725, 488225, 761631, 1269385, 1464675, 3808155, 6346925, 19040775]

約数ペア:

[(1, 19040775), (3, 6346925), (5, 3808155), (13, 1464675), (15, 1269385), (25, 761631), (39, 488225), (59, 322725), (65, 292935), (75, 253877), (177, 107575), (195, 97645), (295, 64545), (325, 58587), (331, 57525), (767, 24825), (885, 21515), (975, 19529), (993, 19175), (1475, 12909), (1655, 11505), (2301, 8275), (3835, 4965), (4303, 4425)]