20281688

素因数分解:

$2^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1669}}^1$

素因数の和:1720

約数の個数: 48

約数和(自身を含む): 45691200

約数和(自身を除く): 25409512

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 49, 56, 62, 98, 124, 196, 217, 248, 392, 434, 868, 1519, 1669, 1736, 3038, 3338, 6076, 6676, 11683, 12152, 13352, 23366, 46732, 51739, 81781, 93464, 103478, 163562, 206956, 327124, 362173, 413912, 654248, 724346, 1448692, 2535211, 2897384, 5070422, 10140844, 20281688]

約数ペア:

[(1, 20281688), (2, 10140844), (4, 5070422), (7, 2897384), (8, 2535211), (14, 1448692), (28, 724346), (31, 654248), (49, 413912), (56, 362173), (62, 327124), (98, 206956), (124, 163562), (196, 103478), (217, 93464), (248, 81781), (392, 51739), (434, 46732), (868, 23366), (1519, 13352), (1669, 12152), (1736, 11683), (3038, 6676), (3338, 6076)]