21901984

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 52073280

約数和(自身を除く): 30171296

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 32, 34, 38, 52, 68, 76, 104, 136, 152, 163, 208, 221, 247, 272, 304, 323, 326, 416, 442, 494, 544, 608, 646, 652, 884, 988, 1292, 1304, 1768, 1976, 2119, 2584, 2608, 2771, 3097, 3536, 3952, 4199, 4238, 5168, 5216, 5542, 6194, 7072, 7904, 8398, 8476, 10336, 11084, 12388, 16796, 16952, 22168, 24776, 33592, 33904, 36023, 40261, 44336, 49552, 52649, 67184, 67808, 72046, 80522, 88672, 99104, 105298, 134368, 144092, 161044, 210596, 288184, 322088, 421192, 576368, 644176, 684437, 842384, 1152736, 1288352, 1368874, 1684768, 2737748, 5475496, 10950992, 21901984]

約数ペア:

[(1, 21901984), (2, 10950992), (4, 5475496), (8, 2737748), (13, 1684768), (16, 1368874), (17, 1288352), (19, 1152736), (26, 842384), (32, 684437), (34, 644176), (38, 576368), (52, 421192), (68, 322088), (76, 288184), (104, 210596), (136, 161044), (152, 144092), (163, 134368), (208, 105298), (221, 99104), (247, 88672), (272, 80522), (304, 72046), (323, 67808), (326, 67184), (416, 52649), (442, 49552), (494, 44336), (544, 40261), (608, 36023), (646, 33904), (652, 33592), (884, 24776), (988, 22168), (1292, 16952), (1304, 16796), (1768, 12388), (1976, 11084), (2119, 10336), (2584, 8476), (2608, 8398), (2771, 7904), (3097, 7072), (3536, 6194), (3952, 5542), (4199, 5216), (4238, 5168)]