279486545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 406425600

約数和(自身を除く): 126939055

約数列:

[1, 5, 13, 17, 31, 41, 65, 85, 155, 199, 205, 221, 403, 527, 533, 697, 995, 1105, 1271, 2015, 2587, 2635, 2665, 3383, 3485, 6169, 6355, 6851, 8159, 9061, 12935, 16523, 16915, 21607, 30845, 34255, 40795, 43979, 45305, 80197, 82615, 104873, 106067, 108035, 138703, 219895, 252929, 280891, 400985, 524365, 530335, 693515, 1264645, 1363349, 1404455, 1803139, 3288077, 4299793, 6816745, 9015695, 16440385, 21498965, 55897309, 279486545]

約数ペア:

[(1, 279486545), (5, 55897309), (13, 21498965), (17, 16440385), (31, 9015695), (41, 6816745), (65, 4299793), (85, 3288077), (155, 1803139), (199, 1404455), (205, 1363349), (221, 1264645), (403, 693515), (527, 530335), (533, 524365), (697, 400985), (995, 280891), (1105, 252929), (1271, 219895), (2015, 138703), (2587, 108035), (2635, 106067), (2665, 104873), (3383, 82615), (3485, 80197), (6169, 45305), (6355, 43979), (6851, 40795), (8159, 34255), (9061, 30845), (12935, 21607), (16523, 16915)]