31710780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 104648544

約数和(自身を除く): 72937764

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 43, 45, 51, 60, 68, 85, 86, 90, 102, 129, 153, 170, 172, 180, 204, 215, 241, 255, 258, 306, 340, 387, 430, 482, 510, 516, 612, 645, 723, 731, 765, 774, 860, 964, 1020, 1205, 1290, 1446, 1462, 1530, 1548, 1935, 2169, 2193, 2410, 2580, 2892, 2924, 3060, 3615, 3655, 3870, 4097, 4338, 4386, 4820, 6579, 7230, 7310, 7740, 8194, 8676, 8772, 10363, 10845, 10965, 12291, 13158, 14460, 14620, 16388, 20485, 20726, 21690, 21930, 24582, 26316, 31089, 32895, 36873, 40970, 41452, 43380, 43860, 49164, 51815, 61455, 62178, 65790, 73746, 81940, 93267, 103630, 122910, 124356, 131580, 147492, 155445, 176171, 184365, 186534, 207260, 245820, 310890, 352342, 368730, 373068, 466335, 528513, 621780, 704684, 737460, 880855, 932670, 1057026, 1585539, 1761710, 1865340, 2114052, 2642565, 3171078, 3523420, 5285130, 6342156, 7927695, 10570260, 15855390, 31710780]

約数ペア:

[(1, 31710780), (2, 15855390), (3, 10570260), (4, 7927695), (5, 6342156), (6, 5285130), (9, 3523420), (10, 3171078), (12, 2642565), (15, 2114052), (17, 1865340), (18, 1761710), (20, 1585539), (30, 1057026), (34, 932670), (36, 880855), (43, 737460), (45, 704684), (51, 621780), (60, 528513), (68, 466335), (85, 373068), (86, 368730), (90, 352342), (102, 310890), (129, 245820), (153, 207260), (170, 186534), (172, 184365), (180, 176171), (204, 155445), (215, 147492), (241, 131580), (255, 124356), (258, 122910), (306, 103630), (340, 93267), (387, 81940), (430, 73746), (482, 65790), (510, 62178), (516, 61455), (612, 51815), (645, 49164), (723, 43860), (731, 43380), (765, 41452), (774, 40970), (860, 36873), (964, 32895), (1020, 31089), (1205, 26316), (1290, 24582), (1446, 21930), (1462, 21690), (1530, 20726), (1548, 20485), (1935, 16388), (2169, 14620), (2193, 14460), (2410, 13158), (2580, 12291), (2892, 10965), (2924, 10845), (3060, 10363), (3615, 8772), (3655, 8676), (3870, 8194), (4097, 7740), (4338, 7310), (4386, 7230), (4820, 6579)]