399167408

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:346

約数の個数: 80

約数和(自身を含む): 826613760

約数和(自身を除く): 427446352

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 79, 122, 124, 158, 167, 244, 248, 316, 334, 488, 496, 632, 668, 976, 1264, 1336, 1891, 2449, 2672, 3782, 4819, 4898, 5177, 7564, 9638, 9796, 10187, 10354, 13193, 15128, 19276, 19592, 20374, 20708, 26386, 30256, 38552, 39184, 40748, 41416, 52772, 77104, 81496, 82832, 105544, 149389, 162992, 211088, 298778, 315797, 408983, 597556, 631594, 804773, 817966, 1195112, 1263188, 1609546, 1635932, 2390224, 2526376, 3219092, 3271864, 5052752, 6438184, 6543728, 12876368, 24947963, 49895926, 99791852, 199583704, 399167408]

約数ペア:

[(1, 399167408), (2, 199583704), (4, 99791852), (8, 49895926), (16, 24947963), (31, 12876368), (61, 6543728), (62, 6438184), (79, 5052752), (122, 3271864), (124, 3219092), (158, 2526376), (167, 2390224), (244, 1635932), (248, 1609546), (316, 1263188), (334, 1195112), (488, 817966), (496, 804773), (632, 631594), (668, 597556), (976, 408983), (1264, 315797), (1336, 298778), (1891, 211088), (2449, 162992), (2672, 149389), (3782, 105544), (4819, 82832), (4898, 81496), (5177, 77104), (7564, 52772), (9638, 41416), (9796, 40748), (10187, 39184), (10354, 38552), (13193, 30256), (15128, 26386), (19276, 20708), (19592, 20374)]