81670550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:450

約数の個数: 96

約数和(自身を含む): 182800800

約数和(自身を除く): 101130250

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 85, 95, 130, 170, 190, 221, 247, 323, 325, 389, 425, 442, 475, 494, 646, 650, 778, 850, 950, 1105, 1235, 1615, 1945, 2210, 2470, 3230, 3890, 4199, 5057, 5525, 6175, 6613, 7391, 8075, 8398, 9725, 10114, 11050, 12350, 13226, 14782, 16150, 19450, 20995, 25285, 33065, 36955, 41990, 50570, 66130, 73910, 85969, 96083, 104975, 125647, 126425, 165325, 171938, 184775, 192166, 209950, 251294, 252850, 330650, 369550, 429845, 480415, 628235, 859690, 960830, 1256470, 1633411, 2149225, 2402075, 3141175, 3266822, 4298450, 4804150, 6282350, 8167055, 16334110, 40835275, 81670550]

約数ペア:

[(1, 81670550), (2, 40835275), (5, 16334110), (10, 8167055), (13, 6282350), (17, 4804150), (19, 4298450), (25, 3266822), (26, 3141175), (34, 2402075), (38, 2149225), (50, 1633411), (65, 1256470), (85, 960830), (95, 859690), (130, 628235), (170, 480415), (190, 429845), (221, 369550), (247, 330650), (323, 252850), (325, 251294), (389, 209950), (425, 192166), (442, 184775), (475, 171938), (494, 165325), (646, 126425), (650, 125647), (778, 104975), (850, 96083), (950, 85969), (1105, 73910), (1235, 66130), (1615, 50570), (1945, 41990), (2210, 36955), (2470, 33065), (3230, 25285), (3890, 20995), (4199, 19450), (5057, 16150), (5525, 14782), (6175, 13226), (6613, 12350), (7391, 11050), (8075, 10114), (8398, 9725)]