20772990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:431

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 44891010

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 29, 30, 35, 42, 45, 54, 58, 63, 70, 87, 90, 105, 126, 135, 145, 174, 189, 203, 210, 261, 270, 290, 315, 378, 379, 406, 435, 522, 609, 630, 758, 783, 870, 945, 1015, 1137, 1218, 1305, 1566, 1827, 1890, 1895, 2030, 2274, 2610, 2653, 3045, 3411, 3654, 3790, 3915, 5306, 5481, 5685, 6090, 6822, 7830, 7959, 9135, 10233, 10962, 10991, 11370, 13265, 15918, 17055, 18270, 20466, 21982, 23877, 26530, 27405, 32973, 34110, 39795, 47754, 51165, 54810, 54955, 65946, 71631, 76937, 79590, 98919, 102330, 109910, 119385, 143262, 153874, 164865, 197838, 230811, 238770, 296757, 329730, 358155, 384685, 461622, 494595, 593514, 692433, 716310, 769370, 989190, 1154055, 1384866, 1483785, 2077299, 2308110, 2967570, 3462165, 4154598, 6924330, 10386495, 20772990]

約数ペア:

[(1, 20772990), (2, 10386495), (3, 6924330), (5, 4154598), (6, 3462165), (7, 2967570), (9, 2308110), (10, 2077299), (14, 1483785), (15, 1384866), (18, 1154055), (21, 989190), (27, 769370), (29, 716310), (30, 692433), (35, 593514), (42, 494595), (45, 461622), (54, 384685), (58, 358155), (63, 329730), (70, 296757), (87, 238770), (90, 230811), (105, 197838), (126, 164865), (135, 153874), (145, 143262), (174, 119385), (189, 109910), (203, 102330), (210, 98919), (261, 79590), (270, 76937), (290, 71631), (315, 65946), (378, 54955), (379, 54810), (406, 51165), (435, 47754), (522, 39795), (609, 34110), (630, 32973), (758, 27405), (783, 26530), (870, 23877), (945, 21982), (1015, 20466), (1137, 18270), (1218, 17055), (1305, 15918), (1566, 13265), (1827, 11370), (1890, 10991), (1895, 10962), (2030, 10233), (2274, 9135), (2610, 7959), (2653, 7830), (3045, 6822), (3411, 6090), (3654, 5685), (3790, 5481), (3915, 5306)]