21191130

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{977}}^1$

素因数の和:1231

約数の個数: 48

約数和(自身を含む): 55382184

約数和(自身を除く): 34191054

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 241, 482, 723, 977, 1205, 1446, 1954, 2169, 2410, 2931, 3615, 4338, 4885, 5862, 7230, 8793, 9770, 10845, 14655, 17586, 21690, 29310, 43965, 87930, 235457, 470914, 706371, 1177285, 1412742, 2119113, 2354570, 3531855, 4238226, 7063710, 10595565, 21191130]

約数ペア:

[(1, 21191130), (2, 10595565), (3, 7063710), (5, 4238226), (6, 3531855), (9, 2354570), (10, 2119113), (15, 1412742), (18, 1177285), (30, 706371), (45, 470914), (90, 235457), (241, 87930), (482, 43965), (723, 29310), (977, 21690), (1205, 17586), (1446, 14655), (1954, 10845), (2169, 9770), (2410, 8793), (2931, 7230), (3615, 5862), (4338, 4885)]