21939372

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 70487872

約数和(自身を除く): 48548500

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 37, 39, 42, 52, 63, 74, 78, 84, 91, 111, 117, 126, 148, 156, 181, 182, 222, 234, 252, 259, 273, 333, 362, 364, 444, 468, 481, 518, 543, 546, 666, 724, 777, 819, 962, 1036, 1086, 1092, 1267, 1332, 1443, 1554, 1629, 1638, 1924, 2172, 2331, 2353, 2534, 2886, 3108, 3258, 3276, 3367, 3801, 4329, 4662, 4706, 5068, 5772, 6516, 6697, 6734, 7059, 7602, 8658, 9324, 9412, 10101, 11403, 13394, 13468, 14118, 15204, 16471, 17316, 20091, 20202, 21177, 22806, 26788, 28236, 30303, 32942, 40182, 40404, 42354, 45612, 46879, 49413, 60273, 60606, 65884, 80364, 84708, 87061, 93758, 98826, 120546, 121212, 140637, 148239, 174122, 187516, 197652, 241092, 261183, 281274, 296478, 348244, 421911, 522366, 562548, 592956, 609427, 783549, 843822, 1044732, 1218854, 1567098, 1687644, 1828281, 2437708, 3134196, 3656562, 5484843, 7313124, 10969686, 21939372]

約数ペア:

[(1, 21939372), (2, 10969686), (3, 7313124), (4, 5484843), (6, 3656562), (7, 3134196), (9, 2437708), (12, 1828281), (13, 1687644), (14, 1567098), (18, 1218854), (21, 1044732), (26, 843822), (28, 783549), (36, 609427), (37, 592956), (39, 562548), (42, 522366), (52, 421911), (63, 348244), (74, 296478), (78, 281274), (84, 261183), (91, 241092), (111, 197652), (117, 187516), (126, 174122), (148, 148239), (156, 140637), (181, 121212), (182, 120546), (222, 98826), (234, 93758), (252, 87061), (259, 84708), (273, 80364), (333, 65884), (362, 60606), (364, 60273), (444, 49413), (468, 46879), (481, 45612), (518, 42354), (543, 40404), (546, 40182), (666, 32942), (724, 30303), (777, 28236), (819, 26788), (962, 22806), (1036, 21177), (1086, 20202), (1092, 20091), (1267, 17316), (1332, 16471), (1443, 15204), (1554, 14118), (1629, 13468), (1638, 13394), (1924, 11403), (2172, 10101), (2331, 9412), (2353, 9324), (2534, 8658), (2886, 7602), (3108, 7059), (3258, 6734), (3276, 6697), (3367, 6516), (3801, 5772), (4329, 5068), (4662, 4706)]