21012910

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{967}}^1$

素因数の和:1068

約数の個数: 32

約数和(自身を含む): 39517632

約数和(自身を除く): 18504722

約数列:

[1, 2, 5, 10, 41, 53, 82, 106, 205, 265, 410, 530, 967, 1934, 2173, 4346, 4835, 9670, 10865, 21730, 39647, 51251, 79294, 102502, 198235, 256255, 396470, 512510, 2101291, 4202582, 10506455, 21012910]

約数ペア:

[(1, 21012910), (2, 10506455), (5, 4202582), (10, 2101291), (41, 512510), (53, 396470), (82, 256255), (106, 198235), (205, 102502), (265, 79294), (410, 51251), (530, 39647), (967, 21730), (1934, 10865), (2173, 9670), (4346, 4835)]