90739025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 129158400

約数和(自身を除く): 38419375

約数列:

[1, 5, 13, 23, 25, 61, 65, 115, 199, 299, 305, 325, 575, 793, 995, 1403, 1495, 1525, 2587, 3965, 4577, 4975, 7015, 7475, 12139, 12935, 18239, 19825, 22885, 35075, 59501, 60695, 64675, 91195, 114425, 157807, 279197, 297505, 303475, 455975, 789035, 1395985, 1487525, 3629561, 3945175, 6979925, 18147805, 90739025]

約数ペア:

[(1, 90739025), (5, 18147805), (13, 6979925), (23, 3945175), (25, 3629561), (61, 1487525), (65, 1395985), (115, 789035), (199, 455975), (299, 303475), (305, 297505), (325, 279197), (575, 157807), (793, 114425), (995, 91195), (1403, 64675), (1495, 60695), (1525, 59501), (2587, 35075), (3965, 22885), (4577, 19825), (4975, 18239), (7015, 12935), (7475, 12139)]