20427375

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 37140480

約数和(自身を除く): 16713105

約数列:

[1, 3, 5, 15, 19, 25, 47, 57, 61, 75, 95, 125, 141, 183, 235, 285, 305, 375, 475, 705, 893, 915, 1159, 1175, 1425, 1525, 2375, 2679, 2867, 3477, 3525, 4465, 4575, 5795, 5875, 7125, 7625, 8601, 13395, 14335, 17385, 17625, 22325, 22875, 28975, 43005, 54473, 66975, 71675, 86925, 111625, 144875, 163419, 215025, 272365, 334875, 358375, 434625, 817095, 1075125, 1361825, 4085475, 6809125, 20427375]

約数ペア:

[(1, 20427375), (3, 6809125), (5, 4085475), (15, 1361825), (19, 1075125), (25, 817095), (47, 434625), (57, 358375), (61, 334875), (75, 272365), (95, 215025), (125, 163419), (141, 144875), (183, 111625), (235, 86925), (285, 71675), (305, 66975), (375, 54473), (475, 43005), (705, 28975), (893, 22875), (915, 22325), (1159, 17625), (1175, 17385), (1425, 14335), (1525, 13395), (2375, 8601), (2679, 7625), (2867, 7125), (3477, 5875), (3525, 5795), (4465, 4575)]