25928721

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 48330240

約数和(自身を除く): 22401519

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 61, 63, 91, 117, 173, 183, 189, 273, 351, 427, 519, 549, 793, 819, 1211, 1281, 1557, 1647, 2249, 2379, 2457, 3633, 3843, 4671, 5551, 6747, 7137, 10553, 10899, 11529, 15743, 16653, 20241, 21411, 31659, 32697, 47229, 49959, 60723, 73871, 94977, 137189, 141687, 149877, 221613, 284931, 411567, 425061, 664839, 960323, 1234701, 1994517, 2880969, 3704103, 8642907, 25928721]

約数ペア:

[(1, 25928721), (3, 8642907), (7, 3704103), (9, 2880969), (13, 1994517), (21, 1234701), (27, 960323), (39, 664839), (61, 425061), (63, 411567), (91, 284931), (117, 221613), (173, 149877), (183, 141687), (189, 137189), (273, 94977), (351, 73871), (427, 60723), (519, 49959), (549, 47229), (793, 32697), (819, 31659), (1211, 21411), (1281, 20241), (1557, 16653), (1647, 15743), (2249, 11529), (2379, 10899), (2457, 10553), (3633, 7137), (3843, 6747), (4671, 5551)]