31461990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{643}}^1$

素因数の和:893

約数の個数: 64

約数和(自身を含む): 86800896

約数和(自身を除く): 55338906

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 233, 466, 643, 699, 1165, 1286, 1398, 1631, 1929, 2330, 3215, 3262, 3495, 3858, 4501, 4893, 6430, 6990, 8155, 9002, 9645, 9786, 13503, 16310, 19290, 22505, 24465, 27006, 45010, 48930, 67515, 135030, 149819, 299638, 449457, 749095, 898914, 1048733, 1498190, 2097466, 2247285, 3146199, 4494570, 5243665, 6292398, 10487330, 15730995, 31461990]

約数ペア:

[(1, 31461990), (2, 15730995), (3, 10487330), (5, 6292398), (6, 5243665), (7, 4494570), (10, 3146199), (14, 2247285), (15, 2097466), (21, 1498190), (30, 1048733), (35, 898914), (42, 749095), (70, 449457), (105, 299638), (210, 149819), (233, 135030), (466, 67515), (643, 48930), (699, 45010), (1165, 27006), (1286, 24465), (1398, 22505), (1631, 19290), (1929, 16310), (2330, 13503), (3215, 9786), (3262, 9645), (3495, 9002), (3858, 8155), (4501, 6990), (4893, 6430)]