21199721970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1\times {\mathrm{6397}}^1$

素因数の和:6824

約数の個数: 128

約数和(自身を含む): 59671535616

約数和(自身を除く): 38471813646

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 43, 70, 86, 105, 129, 210, 215, 258, 301, 367, 430, 602, 645, 734, 903, 1101, 1290, 1505, 1806, 1835, 2202, 2569, 3010, 3670, 4515, 5138, 5505, 6397, 7707, 9030, 11010, 12794, 12845, 15414, 15781, 19191, 25690, 31562, 31985, 38382, 38535, 44779, 47343, 63970, 77070, 78905, 89558, 94686, 95955, 110467, 134337, 157810, 191910, 220934, 223895, 236715, 268674, 275071, 331401, 447790, 473430, 550142, 552335, 662802, 671685, 825213, 1104670, 1343370, 1375355, 1650426, 1657005, 1925497, 2347699, 2750710, 3314010, 3850994, 4126065, 4695398, 5776491, 7043097, 8252130, 9627485, 11552982, 11738495, 14086194, 16433893, 19254970, 23476990, 28882455, 32867786, 35215485, 49301679, 57764910, 70430970, 82169465, 98603358, 100951057, 164338930, 201902114, 246508395, 302853171, 493016790, 504755285, 605706342, 706657399, 1009510570, 1413314798, 1514265855, 2119972197, 3028531710, 3533286995, 4239944394, 7066573990, 10599860985, 21199721970]

約数ペア:

[(1, 21199721970), (2, 10599860985), (3, 7066573990), (5, 4239944394), (6, 3533286995), (7, 3028531710), (10, 2119972197), (14, 1514265855), (15, 1413314798), (21, 1009510570), (30, 706657399), (35, 605706342), (42, 504755285), (43, 493016790), (70, 302853171), (86, 246508395), (105, 201902114), (129, 164338930), (210, 100951057), (215, 98603358), (258, 82169465), (301, 70430970), (367, 57764910), (430, 49301679), (602, 35215485), (645, 32867786), (734, 28882455), (903, 23476990), (1101, 19254970), (1290, 16433893), (1505, 14086194), (1806, 11738495), (1835, 11552982), (2202, 9627485), (2569, 8252130), (3010, 7043097), (3670, 5776491), (4515, 4695398), (5138, 4126065), (5505, 3850994), (6397, 3314010), (7707, 2750710), (9030, 2347699), (11010, 1925497), (12794, 1657005), (12845, 1650426), (15414, 1375355), (15781, 1343370), (19191, 1104670), (25690, 825213), (31562, 671685), (31985, 662802), (38382, 552335), (38535, 550142), (44779, 473430), (47343, 447790), (63970, 331401), (77070, 275071), (78905, 268674), (89558, 236715), (94686, 223895), (95955, 220934), (110467, 191910), (134337, 157810)]