21000880912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{11159}}^1$

素因数の和:11249

約数の個数: 120

約数和(自身を含む): 48431632320

約数和(自身を除く): 27430751408

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 37, 44, 68, 74, 88, 136, 148, 176, 187, 272, 289, 296, 374, 407, 578, 592, 629, 748, 814, 1156, 1258, 1496, 1628, 2312, 2516, 2992, 3179, 3256, 4624, 5032, 6358, 6512, 6919, 10064, 10693, 11159, 12716, 13838, 21386, 22318, 25432, 27676, 42772, 44636, 50864, 55352, 85544, 89272, 110704, 117623, 122749, 171088, 178544, 189703, 235246, 245498, 379406, 412883, 470492, 490996, 758812, 825766, 940984, 981992, 1517624, 1651532, 1881968, 1963984, 2086733, 3035248, 3224951, 3303064, 4173466, 4541713, 6449902, 6606128, 7019011, 8346932, 9083426, 12899804, 14038022, 16693864, 18166852, 25799608, 28076044, 33387728, 35474461, 36333704, 51599216, 56152088, 70948922, 72667408, 77209121, 112304176, 119323187, 141897844, 154418242, 238646374, 283795688, 308836484, 477292748, 567591376, 617672968, 954585496, 1235345936, 1312555057, 1909170992, 2625110114, 5250220228, 10500440456, 21000880912]

約数ペア:

[(1, 21000880912), (2, 10500440456), (4, 5250220228), (8, 2625110114), (11, 1909170992), (16, 1312555057), (17, 1235345936), (22, 954585496), (34, 617672968), (37, 567591376), (44, 477292748), (68, 308836484), (74, 283795688), (88, 238646374), (136, 154418242), (148, 141897844), (176, 119323187), (187, 112304176), (272, 77209121), (289, 72667408), (296, 70948922), (374, 56152088), (407, 51599216), (578, 36333704), (592, 35474461), (629, 33387728), (748, 28076044), (814, 25799608), (1156, 18166852), (1258, 16693864), (1496, 14038022), (1628, 12899804), (2312, 9083426), (2516, 8346932), (2992, 7019011), (3179, 6606128), (3256, 6449902), (4624, 4541713), (5032, 4173466), (6358, 3303064), (6512, 3224951), (6919, 3035248), (10064, 2086733), (10693, 1963984), (11159, 1881968), (12716, 1651532), (13838, 1517624), (21386, 981992), (22318, 940984), (25432, 825766), (27676, 758812), (42772, 490996), (44636, 470492), (50864, 412883), (55352, 379406), (85544, 245498), (89272, 235246), (110704, 189703), (117623, 178544), (122749, 171088)]