400781888

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:476

約数の個数: 112

約数和(自身を含む): 908060160

約数和(自身を除く): 507278272

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 41, 52, 62, 64, 82, 104, 124, 164, 208, 248, 328, 379, 403, 416, 496, 533, 656, 758, 806, 832, 992, 1066, 1271, 1312, 1516, 1612, 1984, 2132, 2542, 2624, 3032, 3224, 4264, 4927, 5084, 6064, 6448, 8528, 9854, 10168, 11749, 12128, 12896, 15539, 16523, 17056, 19708, 20336, 23498, 24256, 25792, 31078, 33046, 34112, 39416, 40672, 46996, 62156, 66092, 78832, 81344, 93992, 124312, 132184, 152737, 157664, 187984, 202007, 248624, 264368, 305474, 315328, 375968, 404014, 481709, 497248, 528736, 610948, 751936, 808028, 963418, 994496, 1057472, 1221896, 1616056, 1926836, 2443792, 3232112, 3853672, 4887584, 6262217, 6464224, 7707344, 9775168, 12524434, 12928448, 15414688, 25048868, 30829376, 50097736, 100195472, 200390944, 400781888]

約数ペア:

[(1, 400781888), (2, 200390944), (4, 100195472), (8, 50097736), (13, 30829376), (16, 25048868), (26, 15414688), (31, 12928448), (32, 12524434), (41, 9775168), (52, 7707344), (62, 6464224), (64, 6262217), (82, 4887584), (104, 3853672), (124, 3232112), (164, 2443792), (208, 1926836), (248, 1616056), (328, 1221896), (379, 1057472), (403, 994496), (416, 963418), (496, 808028), (533, 751936), (656, 610948), (758, 528736), (806, 497248), (832, 481709), (992, 404014), (1066, 375968), (1271, 315328), (1312, 305474), (1516, 264368), (1612, 248624), (1984, 202007), (2132, 187984), (2542, 157664), (2624, 152737), (3032, 132184), (3224, 124312), (4264, 93992), (4927, 81344), (5084, 78832), (6064, 66092), (6448, 62156), (8528, 46996), (9854, 40672), (10168, 39416), (11749, 34112), (12128, 33046), (12896, 31078), (15539, 25792), (16523, 24256), (17056, 23498), (19708, 20336)]