18996818425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{36739}}^1$

素因数の和:36842

約数の個数: 48

約数和(自身を含む): 26660307520

約数和(自身を除く): 7663489095

約数列:

[1, 5, 13, 25, 37, 43, 65, 185, 215, 325, 481, 559, 925, 1075, 1591, 2405, 2795, 7955, 12025, 13975, 20683, 36739, 39775, 103415, 183695, 477607, 517075, 918475, 1359343, 1579777, 2388035, 6796715, 7898885, 11940175, 17671459, 20537101, 33983575, 39494425, 58451749, 88357295, 102685505, 292258745, 441786475, 513427525, 759872737, 1461293725, 3799363685, 18996818425]

約数ペア:

[(1, 18996818425), (5, 3799363685), (13, 1461293725), (25, 759872737), (37, 513427525), (43, 441786475), (65, 292258745), (185, 102685505), (215, 88357295), (325, 58451749), (481, 39494425), (559, 33983575), (925, 20537101), (1075, 17671459), (1591, 11940175), (2405, 7898885), (2795, 6796715), (7955, 2388035), (12025, 1579777), (13975, 1359343), (20683, 918475), (36739, 517075), (39775, 477607), (103415, 183695)]