209215825

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2243}}^1$

素因数の和:2314

約数の個数: 48

約数和(自身を含む): 327229056

約数和(自身を除く): 118013231

約数列:

[1, 5, 7, 13, 25, 35, 41, 65, 91, 175, 205, 287, 325, 455, 533, 1025, 1435, 2243, 2275, 2665, 3731, 7175, 11215, 13325, 15701, 18655, 29159, 56075, 78505, 91963, 93275, 145795, 204113, 392525, 459815, 643741, 728975, 1020565, 1195519, 2299075, 3218705, 5102825, 5977595, 8368633, 16093525, 29887975, 41843165, 209215825]

約数ペア:

[(1, 209215825), (5, 41843165), (7, 29887975), (13, 16093525), (25, 8368633), (35, 5977595), (41, 5102825), (65, 3218705), (91, 2299075), (175, 1195519), (205, 1020565), (287, 728975), (325, 643741), (455, 459815), (533, 392525), (1025, 204113), (1435, 145795), (2243, 93275), (2275, 91963), (2665, 78505), (3731, 56075), (7175, 29159), (11215, 18655), (13325, 15701)]