51535640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 128

約数和(自身を含む): 135475200

約数和(自身を除く): 83939560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 46, 52, 62, 65, 92, 104, 115, 124, 130, 139, 155, 184, 230, 248, 260, 278, 299, 310, 403, 460, 520, 556, 598, 620, 695, 713, 806, 920, 1112, 1196, 1240, 1390, 1426, 1495, 1612, 1807, 2015, 2392, 2780, 2852, 2990, 3197, 3224, 3565, 3614, 4030, 4309, 5560, 5704, 5980, 6394, 7130, 7228, 8060, 8618, 9035, 9269, 11960, 12788, 14260, 14456, 15985, 16120, 17236, 18070, 18538, 21545, 25576, 28520, 31970, 34472, 36140, 37076, 41561, 43090, 46345, 56017, 63940, 72280, 74152, 83122, 86180, 92690, 99107, 112034, 127880, 166244, 172360, 185380, 198214, 207805, 224068, 280085, 332488, 370760, 396428, 415610, 448136, 495535, 560170, 792856, 831220, 991070, 1120340, 1288391, 1662440, 1982140, 2240680, 2576782, 3964280, 5153564, 6441955, 10307128, 12883910, 25767820, 51535640]

約数ペア:

[(1, 51535640), (2, 25767820), (4, 12883910), (5, 10307128), (8, 6441955), (10, 5153564), (13, 3964280), (20, 2576782), (23, 2240680), (26, 1982140), (31, 1662440), (40, 1288391), (46, 1120340), (52, 991070), (62, 831220), (65, 792856), (92, 560170), (104, 495535), (115, 448136), (124, 415610), (130, 396428), (139, 370760), (155, 332488), (184, 280085), (230, 224068), (248, 207805), (260, 198214), (278, 185380), (299, 172360), (310, 166244), (403, 127880), (460, 112034), (520, 99107), (556, 92690), (598, 86180), (620, 83122), (695, 74152), (713, 72280), (806, 63940), (920, 56017), (1112, 46345), (1196, 43090), (1240, 41561), (1390, 37076), (1426, 36140), (1495, 34472), (1612, 31970), (1807, 28520), (2015, 25576), (2392, 21545), (2780, 18538), (2852, 18070), (2990, 17236), (3197, 16120), (3224, 15985), (3565, 14456), (3614, 14260), (4030, 12788), (4309, 11960), (5560, 9269), (5704, 9035), (5980, 8618), (6394, 8060), (7130, 7228)]