20721720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{172681}}^1$

素因数の和:172695

約数の個数: 32

約数和(自身を含む): 62165520

約数和(自身を除く): 41443800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 172681, 345362, 518043, 690724, 863405, 1036086, 1381448, 1726810, 2072172, 2590215, 3453620, 4144344, 5180430, 6907240, 10360860, 20721720]

約数ペア:

[(1, 20721720), (2, 10360860), (3, 6907240), (4, 5180430), (5, 4144344), (6, 3453620), (8, 2590215), (10, 2072172), (12, 1726810), (15, 1381448), (20, 1036086), (24, 863405), (30, 690724), (40, 518043), (60, 345362), (120, 172681)]