20171209952

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1\times {\mathrm{571}}^1$

素因数の和:1000

約数の個数: 96

約数和(自身を含む): 41513472000

約数和(自身を除く): 21342262048

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 149, 239, 248, 298, 478, 496, 571, 596, 956, 992, 1142, 1192, 1912, 2284, 2384, 3824, 4568, 4619, 4768, 7409, 7648, 9136, 9238, 14818, 17701, 18272, 18476, 29636, 35402, 35611, 36952, 59272, 70804, 71222, 73904, 85079, 118544, 136469, 141608, 142444, 147808, 170158, 237088, 272938, 283216, 284888, 340316, 545876, 566432, 569776, 680632, 1091752, 1103941, 1139552, 1361264, 2183504, 2207882, 2637449, 2722528, 4230539, 4367008, 4415764, 5274898, 8461078, 8831528, 10549796, 16922156, 17663056, 20333881, 21099592, 33844312, 35326112, 40667762, 42199184, 67688624, 81335524, 84398368, 135377248, 162671048, 325342096, 630350311, 650684192, 1260700622, 2521401244, 5042802488, 10085604976, 20171209952]

約数ペア:

[(1, 20171209952), (2, 10085604976), (4, 5042802488), (8, 2521401244), (16, 1260700622), (31, 650684192), (32, 630350311), (62, 325342096), (124, 162671048), (149, 135377248), (239, 84398368), (248, 81335524), (298, 67688624), (478, 42199184), (496, 40667762), (571, 35326112), (596, 33844312), (956, 21099592), (992, 20333881), (1142, 17663056), (1192, 16922156), (1912, 10549796), (2284, 8831528), (2384, 8461078), (3824, 5274898), (4568, 4415764), (4619, 4367008), (4768, 4230539), (7409, 2722528), (7648, 2637449), (9136, 2207882), (9238, 2183504), (14818, 1361264), (17701, 1139552), (18272, 1103941), (18476, 1091752), (29636, 680632), (35402, 569776), (35611, 566432), (36952, 545876), (59272, 340316), (70804, 284888), (71222, 283216), (73904, 272938), (85079, 237088), (118544, 170158), (136469, 147808), (141608, 142444)]