20005928475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:498

約数の個数: 144

約数和(自身を含む): 37089438624

約数和(自身を除く): 17083510149

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 123, 137, 169, 195, 205, 281, 325, 411, 507, 533, 615, 685, 843, 845, 975, 1025, 1405, 1599, 1781, 2055, 2535, 2665, 3075, 3425, 3653, 4215, 4225, 5343, 5617, 6929, 7025, 7995, 8905, 10275, 10959, 11521, 12675, 13325, 16851, 18265, 20787, 21075, 23153, 26715, 28085, 34563, 34645, 38497, 39975, 44525, 47489, 54795, 57605, 69459, 73021, 84255, 91325, 103935, 115491, 115765, 133575, 140425, 142467, 149773, 172815, 173225, 192485, 219063, 237445, 273975, 288025, 347295, 365105, 421275, 449319, 500461, 519675, 577455, 578825, 712335, 748865, 864075, 949273, 962425, 1095315, 1187225, 1501383, 1578377, 1736475, 1825525, 1947049, 2246595, 2502305, 2847819, 2887275, 3561675, 3744325, 4735131, 4746365, 5476575, 5841147, 6505993, 7506915, 7891885, 9735245, 11232975, 12511525, 14239095, 19517979, 20518901, 23675655, 23731825, 29205735, 32529965, 37534575, 39459425, 48676225, 61556703, 71195475, 97589895, 102594505, 118378275, 146028675, 162649825, 266745713, 307783515, 487949475, 512972525, 800237139, 1333728565, 1538917575, 4001185695, 6668642825, 20005928475]

約数ペア:

[(1, 20005928475), (3, 6668642825), (5, 4001185695), (13, 1538917575), (15, 1333728565), (25, 800237139), (39, 512972525), (41, 487949475), (65, 307783515), (75, 266745713), (123, 162649825), (137, 146028675), (169, 118378275), (195, 102594505), (205, 97589895), (281, 71195475), (325, 61556703), (411, 48676225), (507, 39459425), (533, 37534575), (615, 32529965), (685, 29205735), (843, 23731825), (845, 23675655), (975, 20518901), (1025, 19517979), (1405, 14239095), (1599, 12511525), (1781, 11232975), (2055, 9735245), (2535, 7891885), (2665, 7506915), (3075, 6505993), (3425, 5841147), (3653, 5476575), (4215, 4746365), (4225, 4735131), (5343, 3744325), (5617, 3561675), (6929, 2887275), (7025, 2847819), (7995, 2502305), (8905, 2246595), (10275, 1947049), (10959, 1825525), (11521, 1736475), (12675, 1578377), (13325, 1501383), (16851, 1187225), (18265, 1095315), (20787, 962425), (21075, 949273), (23153, 864075), (26715, 748865), (28085, 712335), (34563, 578825), (34645, 577455), (38497, 519675), (39975, 500461), (44525, 449319), (47489, 421275), (54795, 365105), (57605, 347295), (69459, 288025), (73021, 273975), (84255, 237445), (91325, 219063), (103935, 192485), (115491, 173225), (115765, 172815), (133575, 149773), (140425, 142467)]