21747285

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2557}}^1$

素因数の和:2584

約数の個数: 48

約数和(自身を含む): 44693376

約数和(自身を除く): 22946091

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2557, 2835, 7671, 8505, 12785, 17899, 23013, 38355, 53697, 69039, 89495, 115065, 161091, 207117, 268485, 345195, 483273, 621351, 805455, 1035585, 1449819, 2416365, 3106755, 4349457, 7249095, 21747285]

約数ペア:

[(1, 21747285), (3, 7249095), (5, 4349457), (7, 3106755), (9, 2416365), (15, 1449819), (21, 1035585), (27, 805455), (35, 621351), (45, 483273), (63, 345195), (81, 268485), (105, 207117), (135, 161091), (189, 115065), (243, 89495), (315, 69039), (405, 53697), (567, 38355), (945, 23013), (1215, 17899), (1701, 12785), (2557, 8505), (2835, 7671)]