21465535

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 33730560

約数和(自身を除く): 12265025

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 169, 191, 247, 455, 665, 845, 955, 1183, 1235, 1337, 1729, 2483, 3211, 3629, 5915, 6685, 8645, 12415, 16055, 17381, 18145, 22477, 25403, 32279, 47177, 86905, 112385, 127015, 161395, 225953, 235885, 330239, 613301, 1129765, 1651195, 3066505, 4293107, 21465535]

約数ペア:

[(1, 21465535), (5, 4293107), (7, 3066505), (13, 1651195), (19, 1129765), (35, 613301), (65, 330239), (91, 235885), (95, 225953), (133, 161395), (169, 127015), (191, 112385), (247, 86905), (455, 47177), (665, 32279), (845, 25403), (955, 22477), (1183, 18145), (1235, 17381), (1337, 16055), (1729, 12415), (2483, 8645), (3211, 6685), (3629, 5915)]