19667620

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 30329180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 61, 70, 94, 98, 122, 140, 188, 196, 235, 244, 245, 305, 329, 343, 427, 470, 490, 610, 658, 686, 854, 940, 980, 1220, 1316, 1372, 1645, 1708, 1715, 2135, 2303, 2867, 2989, 3290, 3430, 4270, 4606, 5734, 5978, 6580, 6860, 8540, 9212, 11468, 11515, 11956, 14335, 14945, 16121, 20069, 20923, 23030, 28670, 29890, 32242, 40138, 41846, 46060, 57340, 59780, 64484, 80276, 80605, 83692, 100345, 104615, 140483, 161210, 200690, 209230, 280966, 322420, 401380, 418460, 561932, 702415, 983381, 1404830, 1966762, 2809660, 3933524, 4916905, 9833810, 19667620]

約数ペア:

[(1, 19667620), (2, 9833810), (4, 4916905), (5, 3933524), (7, 2809660), (10, 1966762), (14, 1404830), (20, 983381), (28, 702415), (35, 561932), (47, 418460), (49, 401380), (61, 322420), (70, 280966), (94, 209230), (98, 200690), (122, 161210), (140, 140483), (188, 104615), (196, 100345), (235, 83692), (244, 80605), (245, 80276), (305, 64484), (329, 59780), (343, 57340), (427, 46060), (470, 41846), (490, 40138), (610, 32242), (658, 29890), (686, 28670), (854, 23030), (940, 20923), (980, 20069), (1220, 16121), (1316, 14945), (1372, 14335), (1645, 11956), (1708, 11515), (1715, 11468), (2135, 9212), (2303, 8540), (2867, 6860), (2989, 6580), (3290, 5978), (3430, 5734), (4270, 4606)]