21511920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89633}}^1$

素因数の和:89649

約数の個数: 40

約数和(自身を含む): 66687696

約数和(自身を除く): 45175776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89633, 179266, 268899, 358532, 448165, 537798, 717064, 896330, 1075596, 1344495, 1434128, 1792660, 2151192, 2688990, 3585320, 4302384, 5377980, 7170640, 10755960, 21511920]

約数ペア:

[(1, 21511920), (2, 10755960), (3, 7170640), (4, 5377980), (5, 4302384), (6, 3585320), (8, 2688990), (10, 2151192), (12, 1792660), (15, 1434128), (16, 1344495), (20, 1075596), (24, 896330), (30, 717064), (40, 537798), (48, 448165), (60, 358532), (80, 268899), (120, 179266), (240, 89633)]