251011280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12703}}^1$

素因数の和:12748

約数の個数: 80

約数和(自身を含む): 661624320

約数和(自身を除く): 410613040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 12703, 19760, 25406, 50812, 63515, 101624, 127030, 165139, 203248, 241357, 254060, 330278, 482714, 508120, 660556, 825695, 965428, 1016240, 1206785, 1321112, 1651390, 1930856, 2413570, 2642224, 3137641, 3302780, 3861712, 4827140, 6275282, 6605560, 9654280, 12550564, 13211120, 15688205, 19308560, 25101128, 31376410, 50202256, 62752820, 125505640, 251011280]

約数ペア:

[(1, 251011280), (2, 125505640), (4, 62752820), (5, 50202256), (8, 31376410), (10, 25101128), (13, 19308560), (16, 15688205), (19, 13211120), (20, 12550564), (26, 9654280), (38, 6605560), (40, 6275282), (52, 4827140), (65, 3861712), (76, 3302780), (80, 3137641), (95, 2642224), (104, 2413570), (130, 1930856), (152, 1651390), (190, 1321112), (208, 1206785), (247, 1016240), (260, 965428), (304, 825695), (380, 660556), (494, 508120), (520, 482714), (760, 330278), (988, 254060), (1040, 241357), (1235, 203248), (1520, 165139), (1976, 127030), (2470, 101624), (3952, 63515), (4940, 50812), (9880, 25406), (12703, 19760)]