25047820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:503

約数の個数: 72

約数和(自身を含む): 62339760

約数和(自身を除く): 37291940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 419, 427, 490, 610, 838, 854, 980, 1220, 1676, 1708, 2095, 2135, 2933, 2989, 4190, 4270, 5866, 5978, 8380, 8540, 11732, 11956, 14665, 14945, 20531, 25559, 29330, 29890, 41062, 51118, 58660, 59780, 82124, 102236, 102655, 127795, 178913, 205310, 255590, 357826, 410620, 511180, 715652, 894565, 1252391, 1789130, 2504782, 3578260, 5009564, 6261955, 12523910, 25047820]

約数ペア:

[(1, 25047820), (2, 12523910), (4, 6261955), (5, 5009564), (7, 3578260), (10, 2504782), (14, 1789130), (20, 1252391), (28, 894565), (35, 715652), (49, 511180), (61, 410620), (70, 357826), (98, 255590), (122, 205310), (140, 178913), (196, 127795), (244, 102655), (245, 102236), (305, 82124), (419, 59780), (427, 58660), (490, 51118), (610, 41062), (838, 29890), (854, 29330), (980, 25559), (1220, 20531), (1676, 14945), (1708, 14665), (2095, 11956), (2135, 11732), (2933, 8540), (2989, 8380), (4190, 5978), (4270, 5866)]