12821895

素因数分解:

$3^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 23560992

約数和(自身を除く): 10739097

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 173, 183, 243, 305, 405, 519, 549, 865, 915, 1215, 1557, 1647, 2595, 2745, 4671, 4941, 7785, 8235, 10553, 14013, 14823, 23355, 24705, 31659, 42039, 52765, 70065, 74115, 94977, 158295, 210195, 284931, 474885, 854793, 1424655, 2564379, 4273965, 12821895]

約数ペア:

[(1, 12821895), (3, 4273965), (5, 2564379), (9, 1424655), (15, 854793), (27, 474885), (45, 284931), (61, 210195), (81, 158295), (135, 94977), (173, 74115), (183, 70065), (243, 52765), (305, 42039), (405, 31659), (519, 24705), (549, 23355), (865, 14823), (915, 14013), (1215, 10553), (1557, 8235), (1647, 7785), (2595, 4941), (2745, 4671)]