256519620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1249}}^1$

素因数の和:1434

約数の個数: 144

約数和(自身を含む): 895440000

約数和(自身を除く): 638920380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 163, 180, 210, 252, 315, 326, 420, 489, 630, 652, 815, 978, 1141, 1249, 1260, 1467, 1630, 1956, 2282, 2445, 2498, 2934, 3260, 3423, 3747, 4564, 4890, 4996, 5705, 5868, 6245, 6846, 7335, 7494, 8743, 9780, 10269, 11241, 11410, 12490, 13692, 14670, 14988, 17115, 17486, 18735, 20538, 22482, 22820, 24980, 26229, 29340, 34230, 34972, 37470, 41076, 43715, 44964, 51345, 52458, 56205, 68460, 74940, 78687, 87430, 102690, 104916, 112410, 131145, 157374, 174860, 203587, 205380, 224820, 262290, 314748, 393435, 407174, 524580, 610761, 786870, 814348, 1017935, 1221522, 1425109, 1573740, 1832283, 2035870, 2443044, 2850218, 3053805, 3664566, 4071740, 4275327, 5700436, 6107610, 7125545, 7329132, 8550654, 9161415, 12215220, 12825981, 14251090, 17101308, 18322830, 21376635, 25651962, 28502180, 36645660, 42753270, 51303924, 64129905, 85506540, 128259810, 256519620]

約数ペア:

[(1, 256519620), (2, 128259810), (3, 85506540), (4, 64129905), (5, 51303924), (6, 42753270), (7, 36645660), (9, 28502180), (10, 25651962), (12, 21376635), (14, 18322830), (15, 17101308), (18, 14251090), (20, 12825981), (21, 12215220), (28, 9161415), (30, 8550654), (35, 7329132), (36, 7125545), (42, 6107610), (45, 5700436), (60, 4275327), (63, 4071740), (70, 3664566), (84, 3053805), (90, 2850218), (105, 2443044), (126, 2035870), (140, 1832283), (163, 1573740), (180, 1425109), (210, 1221522), (252, 1017935), (315, 814348), (326, 786870), (420, 610761), (489, 524580), (630, 407174), (652, 393435), (815, 314748), (978, 262290), (1141, 224820), (1249, 205380), (1260, 203587), (1467, 174860), (1630, 157374), (1956, 131145), (2282, 112410), (2445, 104916), (2498, 102690), (2934, 87430), (3260, 78687), (3423, 74940), (3747, 68460), (4564, 56205), (4890, 52458), (4996, 51345), (5705, 44964), (5868, 43715), (6245, 41076), (6846, 37470), (7335, 34972), (7494, 34230), (8743, 29340), (9780, 26229), (10269, 24980), (11241, 22820), (11410, 22482), (12490, 20538), (13692, 18735), (14670, 17486), (14988, 17115)]