1221405615

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{311981}}^1$

素因数の和:312024

約数の個数: 32

約数和(自身を含む): 2246270400

約数和(自身を除く): 1024864785

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 311981, 935943, 1559905, 2807829, 4679715, 8423487, 9047449, 14039145, 27142347, 42117435, 45237245, 81427041, 135711735, 244281123, 407135205, 1221405615]

約数ペア:

[(1, 1221405615), (3, 407135205), (5, 244281123), (9, 135711735), (15, 81427041), (27, 45237245), (29, 42117435), (45, 27142347), (87, 14039145), (135, 9047449), (145, 8423487), (261, 4679715), (435, 2807829), (783, 1559905), (1305, 935943), (3915, 311981)]