21886620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 74102784

約数和(自身を除く): 52216164

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 41, 42, 60, 62, 70, 82, 84, 93, 105, 123, 124, 140, 155, 164, 186, 205, 210, 217, 246, 287, 310, 372, 410, 420, 434, 465, 492, 574, 615, 620, 651, 820, 861, 868, 930, 1085, 1148, 1230, 1271, 1302, 1435, 1681, 1722, 1860, 2170, 2460, 2542, 2604, 2870, 3255, 3362, 3444, 3813, 4305, 4340, 5043, 5084, 5740, 6355, 6510, 6724, 7626, 8405, 8610, 8897, 10086, 11767, 12710, 13020, 15252, 16810, 17220, 17794, 19065, 20172, 23534, 25215, 25420, 26691, 33620, 35301, 35588, 38130, 44485, 47068, 50430, 52111, 53382, 58835, 70602, 76260, 88970, 100860, 104222, 106764, 117670, 133455, 141204, 156333, 176505, 177940, 208444, 235340, 260555, 266910, 312666, 353010, 364777, 521110, 533820, 625332, 706020, 729554, 781665, 1042220, 1094331, 1459108, 1563330, 1823885, 2188662, 3126660, 3647770, 4377324, 5471655, 7295540, 10943310, 21886620]

約数ペア:

[(1, 21886620), (2, 10943310), (3, 7295540), (4, 5471655), (5, 4377324), (6, 3647770), (7, 3126660), (10, 2188662), (12, 1823885), (14, 1563330), (15, 1459108), (20, 1094331), (21, 1042220), (28, 781665), (30, 729554), (31, 706020), (35, 625332), (41, 533820), (42, 521110), (60, 364777), (62, 353010), (70, 312666), (82, 266910), (84, 260555), (93, 235340), (105, 208444), (123, 177940), (124, 176505), (140, 156333), (155, 141204), (164, 133455), (186, 117670), (205, 106764), (210, 104222), (217, 100860), (246, 88970), (287, 76260), (310, 70602), (372, 58835), (410, 53382), (420, 52111), (434, 50430), (465, 47068), (492, 44485), (574, 38130), (615, 35588), (620, 35301), (651, 33620), (820, 26691), (861, 25420), (868, 25215), (930, 23534), (1085, 20172), (1148, 19065), (1230, 17794), (1271, 17220), (1302, 16810), (1435, 15252), (1681, 13020), (1722, 12710), (1860, 11767), (2170, 10086), (2460, 8897), (2542, 8610), (2604, 8405), (2870, 7626), (3255, 6724), (3362, 6510), (3444, 6355), (3813, 5740), (4305, 5084), (4340, 5043)]