20912580

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1$

素因数の和:368

約数の個数: 144

約数和(自身を含む): 71058624

約数和(自身を除く): 50146044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 243, 260, 270, 324, 331, 351, 390, 405, 468, 486, 540, 585, 662, 702, 780, 810, 972, 993, 1053, 1170, 1215, 1324, 1404, 1620, 1655, 1755, 1986, 2106, 2340, 2430, 2979, 3159, 3310, 3510, 3972, 4212, 4303, 4860, 4965, 5265, 5958, 6318, 6620, 7020, 8606, 8937, 9930, 10530, 11916, 12636, 12909, 14895, 15795, 17212, 17874, 19860, 21060, 21515, 25818, 26811, 29790, 31590, 35748, 38727, 43030, 44685, 51636, 53622, 59580, 63180, 64545, 77454, 80433, 86060, 89370, 107244, 116181, 129090, 134055, 154908, 160866, 178740, 193635, 232362, 258180, 268110, 321732, 348543, 387270, 402165, 464724, 536220, 580905, 697086, 774540, 804330, 1045629, 1161810, 1394172, 1608660, 1742715, 2091258, 2323620, 3485430, 4182516, 5228145, 6970860, 10456290, 20912580]

約数ペア:

[(1, 20912580), (2, 10456290), (3, 6970860), (4, 5228145), (5, 4182516), (6, 3485430), (9, 2323620), (10, 2091258), (12, 1742715), (13, 1608660), (15, 1394172), (18, 1161810), (20, 1045629), (26, 804330), (27, 774540), (30, 697086), (36, 580905), (39, 536220), (45, 464724), (52, 402165), (54, 387270), (60, 348543), (65, 321732), (78, 268110), (81, 258180), (90, 232362), (108, 193635), (117, 178740), (130, 160866), (135, 154908), (156, 134055), (162, 129090), (180, 116181), (195, 107244), (234, 89370), (243, 86060), (260, 80433), (270, 77454), (324, 64545), (331, 63180), (351, 59580), (390, 53622), (405, 51636), (468, 44685), (486, 43030), (540, 38727), (585, 35748), (662, 31590), (702, 29790), (780, 26811), (810, 25818), (972, 21515), (993, 21060), (1053, 19860), (1170, 17874), (1215, 17212), (1324, 15795), (1404, 14895), (1620, 12909), (1655, 12636), (1755, 11916), (1986, 10530), (2106, 9930), (2340, 8937), (2430, 8606), (2979, 7020), (3159, 6620), (3310, 6318), (3510, 5958), (3972, 5265), (4212, 4965), (4303, 4860)]