21229695

素因数分解:

$3^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 38761632

約数和(自身を除く): 17531937

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 173, 243, 303, 405, 505, 519, 865, 909, 1215, 1515, 1557, 2595, 2727, 4545, 4671, 7785, 8181, 13635, 14013, 17473, 23355, 24543, 40905, 42039, 52419, 70065, 87365, 122715, 157257, 210195, 262095, 471771, 786285, 1415313, 2358855, 4245939, 7076565, 21229695]

約数ペア:

[(1, 21229695), (3, 7076565), (5, 4245939), (9, 2358855), (15, 1415313), (27, 786285), (45, 471771), (81, 262095), (101, 210195), (135, 157257), (173, 122715), (243, 87365), (303, 70065), (405, 52419), (505, 42039), (519, 40905), (865, 24543), (909, 23355), (1215, 17473), (1515, 14013), (1557, 13635), (2595, 8181), (2727, 7785), (4545, 4671)]