18251870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:705

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 23551906

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 647, 806, 910, 1085, 1294, 2015, 2170, 2821, 3235, 4030, 4529, 5642, 6470, 8411, 9058, 14105, 16822, 20057, 22645, 28210, 40114, 42055, 45290, 58877, 84110, 100285, 117754, 140399, 200570, 260741, 280798, 294385, 521482, 588770, 701995, 1303705, 1403990, 1825187, 2607410, 3650374, 9125935, 18251870]

約数ペア:

[(1, 18251870), (2, 9125935), (5, 3650374), (7, 2607410), (10, 1825187), (13, 1403990), (14, 1303705), (26, 701995), (31, 588770), (35, 521482), (62, 294385), (65, 280798), (70, 260741), (91, 200570), (130, 140399), (155, 117754), (182, 100285), (217, 84110), (310, 58877), (403, 45290), (434, 42055), (455, 40114), (647, 28210), (806, 22645), (910, 20057), (1085, 16822), (1294, 14105), (2015, 9058), (2170, 8411), (2821, 6470), (3235, 5642), (4030, 4529)]