21905011156

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{1933}}^1$

素因数の和:2166

約数の個数: 144

約数和(自身を含む): 50003956800

約数和(自身を除く): 28098945644

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 49, 68, 76, 98, 119, 133, 179, 196, 238, 266, 323, 358, 476, 532, 646, 716, 833, 931, 1253, 1292, 1666, 1862, 1933, 2261, 2506, 3043, 3332, 3401, 3724, 3866, 4522, 5012, 6086, 6802, 7732, 8771, 9044, 12172, 13531, 13604, 15827, 17542, 21301, 23807, 27062, 31654, 32861, 35084, 36727, 42602, 47614, 54124, 57817, 63308, 65722, 73454, 85204, 94717, 95228, 115634, 131444, 146908, 149107, 166649, 189434, 230027, 231268, 257089, 298214, 333298, 346007, 378868, 404719, 460054, 514178, 596428, 624359, 666596, 692014, 809438, 920108, 1028356, 1248718, 1384028, 1610189, 1618876, 1799623, 2422049, 2497436, 2833033, 3220378, 3599246, 4370513, 4844098, 5666066, 5882119, 6440756, 6574133, 7198492, 8741026, 9688196, 11332132, 11764238, 13148266, 16954343, 17482052, 23528476, 26296532, 30593591, 33908686, 41174833, 46018931, 61187182, 67817372, 82349666, 92037862, 111760261, 122374364, 164699332, 184075724, 223520522, 288223831, 322132517, 447041044, 576447662, 644265034, 782321827, 1152895324, 1288530068, 1564643654, 3129287308, 5476252789, 10952505578, 21905011156]

約数ペア:

[(1, 21905011156), (2, 10952505578), (4, 5476252789), (7, 3129287308), (14, 1564643654), (17, 1288530068), (19, 1152895324), (28, 782321827), (34, 644265034), (38, 576447662), (49, 447041044), (68, 322132517), (76, 288223831), (98, 223520522), (119, 184075724), (133, 164699332), (179, 122374364), (196, 111760261), (238, 92037862), (266, 82349666), (323, 67817372), (358, 61187182), (476, 46018931), (532, 41174833), (646, 33908686), (716, 30593591), (833, 26296532), (931, 23528476), (1253, 17482052), (1292, 16954343), (1666, 13148266), (1862, 11764238), (1933, 11332132), (2261, 9688196), (2506, 8741026), (3043, 7198492), (3332, 6574133), (3401, 6440756), (3724, 5882119), (3866, 5666066), (4522, 4844098), (5012, 4370513), (6086, 3599246), (6802, 3220378), (7732, 2833033), (8771, 2497436), (9044, 2422049), (12172, 1799623), (13531, 1618876), (13604, 1610189), (15827, 1384028), (17542, 1248718), (21301, 1028356), (23807, 920108), (27062, 809438), (31654, 692014), (32861, 666596), (35084, 624359), (36727, 596428), (42602, 514178), (47614, 460054), (54124, 404719), (57817, 378868), (63308, 346007), (65722, 333298), (73454, 298214), (85204, 257089), (94717, 231268), (95228, 230027), (115634, 189434), (131444, 166649), (146908, 149107)]