21731640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{631}}^1$

素因数の和:693

約数の個数: 128

約数和(自身を含む): 76446720

約数和(自身を除く): 54715080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 615, 631, 820, 840, 861, 984, 1148, 1230, 1262, 1435, 1640, 1722, 1893, 2296, 2460, 2524, 2870, 3155, 3444, 3786, 4305, 4417, 4920, 5048, 5740, 6310, 6888, 7572, 8610, 8834, 9465, 11480, 12620, 13251, 15144, 17220, 17668, 18930, 22085, 25240, 25871, 26502, 34440, 35336, 37860, 44170, 51742, 53004, 66255, 75720, 77613, 88340, 103484, 106008, 129355, 132510, 155226, 176680, 181097, 206968, 258710, 265020, 310452, 362194, 388065, 517420, 530040, 543291, 620904, 724388, 776130, 905485, 1034840, 1086582, 1448776, 1552260, 1810970, 2173164, 2716455, 3104520, 3621940, 4346328, 5432910, 7243880, 10865820, 21731640]

約数ペア:

[(1, 21731640), (2, 10865820), (3, 7243880), (4, 5432910), (5, 4346328), (6, 3621940), (7, 3104520), (8, 2716455), (10, 2173164), (12, 1810970), (14, 1552260), (15, 1448776), (20, 1086582), (21, 1034840), (24, 905485), (28, 776130), (30, 724388), (35, 620904), (40, 543291), (41, 530040), (42, 517420), (56, 388065), (60, 362194), (70, 310452), (82, 265020), (84, 258710), (105, 206968), (120, 181097), (123, 176680), (140, 155226), (164, 132510), (168, 129355), (205, 106008), (210, 103484), (246, 88340), (280, 77613), (287, 75720), (328, 66255), (410, 53004), (420, 51742), (492, 44170), (574, 37860), (615, 35336), (631, 34440), (820, 26502), (840, 25871), (861, 25240), (984, 22085), (1148, 18930), (1230, 17668), (1262, 17220), (1435, 15144), (1640, 13251), (1722, 12620), (1893, 11480), (2296, 9465), (2460, 8834), (2524, 8610), (2870, 7572), (3155, 6888), (3444, 6310), (3786, 5740), (4305, 5048), (4417, 4920)]