2108778925

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 3000620448

約数和(自身を除く): 891841523

約数列:

[1, 5, 11, 25, 37, 55, 83, 121, 185, 227, 275, 407, 415, 605, 913, 925, 1135, 2035, 2075, 2497, 3025, 3071, 4477, 4565, 5675, 8399, 10043, 10175, 12485, 15355, 18841, 22385, 22825, 27467, 33781, 41995, 50215, 62425, 76775, 92389, 94205, 111925, 137335, 168905, 207251, 209975, 251075, 371591, 461945, 471025, 686675, 697117, 844525, 1016279, 1036255, 1857955, 2279761, 2309725, 3485585, 5081395, 5181275, 7668287, 9289775, 11398805, 17427925, 25406975, 38341435, 56994025, 84351157, 191707175, 421755785, 2108778925]

約数ペア:

[(1, 2108778925), (5, 421755785), (11, 191707175), (25, 84351157), (37, 56994025), (55, 38341435), (83, 25406975), (121, 17427925), (185, 11398805), (227, 9289775), (275, 7668287), (407, 5181275), (415, 5081395), (605, 3485585), (913, 2309725), (925, 2279761), (1135, 1857955), (2035, 1036255), (2075, 1016279), (2497, 844525), (3025, 697117), (3071, 686675), (4477, 471025), (4565, 461945), (5675, 371591), (8399, 251075), (10043, 209975), (10175, 207251), (12485, 168905), (15355, 137335), (18841, 111925), (22385, 94205), (22825, 92389), (27467, 76775), (33781, 62425), (41995, 50215)]