643670020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{19237}}^1$

素因数の和:19492

約数の個数: 48

約数和(自身を含む): 1551352320

約数和(自身を除く): 907682300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1195, 1673, 2390, 3346, 4780, 6692, 8365, 16730, 19237, 33460, 38474, 76948, 96185, 134659, 192370, 269318, 384740, 538636, 673295, 1346590, 2693180, 4597643, 9195286, 18390572, 22988215, 32183501, 45976430, 64367002, 91952860, 128734004, 160917505, 321835010, 643670020]

約数ペア:

[(1, 643670020), (2, 321835010), (4, 160917505), (5, 128734004), (7, 91952860), (10, 64367002), (14, 45976430), (20, 32183501), (28, 22988215), (35, 18390572), (70, 9195286), (140, 4597643), (239, 2693180), (478, 1346590), (956, 673295), (1195, 538636), (1673, 384740), (2390, 269318), (3346, 192370), (4780, 134659), (6692, 96185), (8365, 76948), (16730, 38474), (19237, 33460)]