20662215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10357}}^1$

素因数の和:10391

約数の個数: 32

約数和(自身を含む): 39774720

約数和(自身を除く): 19112505

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10357, 31071, 51785, 72499, 155355, 196783, 217497, 362495, 590349, 983915, 1087485, 1377481, 2951745, 4132443, 6887405, 20662215]

約数ペア:

[(1, 20662215), (3, 6887405), (5, 4132443), (7, 2951745), (15, 1377481), (19, 1087485), (21, 983915), (35, 590349), (57, 362495), (95, 217497), (105, 196783), (133, 155355), (285, 72499), (399, 51785), (665, 31071), (1995, 10357)]