20213904921

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1283}}^1\times {\mathrm{6883}}^1$

素因数の和:8285

約数の個数: 32

約数和(自身を含む): 31113477120

約数和(自身を除く): 10899572199

約数列:

[1, 3, 7, 21, 109, 327, 763, 1283, 2289, 3849, 6883, 8981, 20649, 26943, 48181, 139847, 144543, 419541, 750247, 978929, 2250741, 2936787, 5251729, 8830889, 15755187, 26492667, 61816223, 185448669, 962566901, 2887700703, 6737968307, 20213904921]

約数ペア:

[(1, 20213904921), (3, 6737968307), (7, 2887700703), (21, 962566901), (109, 185448669), (327, 61816223), (763, 26492667), (1283, 15755187), (2289, 8830889), (3849, 5251729), (6883, 2936787), (8981, 2250741), (20649, 978929), (26943, 750247), (48181, 419541), (139847, 144543)]