16800000020

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{829}}^1\times {\mathrm{3739}}^1$

素因数の和:4848

約数の個数: 48

約数和(自身を含む): 35462380800

約数和(自身を除く): 18662380780

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 829, 1084, 1355, 1658, 2710, 3316, 3739, 4145, 5420, 7478, 8290, 14956, 16580, 18695, 37390, 74780, 224659, 449318, 898636, 1013269, 1123295, 2026538, 2246590, 3099631, 4053076, 4493180, 5066345, 6199262, 10132690, 12398524, 15498155, 20265380, 30996310, 61992620, 840000001, 1680000002, 3360000004, 4200000005, 8400000010, 16800000020]

約数ペア:

[(1, 16800000020), (2, 8400000010), (4, 4200000005), (5, 3360000004), (10, 1680000002), (20, 840000001), (271, 61992620), (542, 30996310), (829, 20265380), (1084, 15498155), (1355, 12398524), (1658, 10132690), (2710, 6199262), (3316, 5066345), (3739, 4493180), (4145, 4053076), (5420, 3099631), (7478, 2246590), (8290, 2026538), (14956, 1123295), (16580, 1013269), (18695, 898636), (37390, 449318), (74780, 224659)]