21075012

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:538

約数の個数: 96

約数和(自身を含む): 63607040

約数和(自身を除く): 42532028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 61, 63, 84, 108, 122, 126, 183, 189, 244, 252, 366, 378, 427, 457, 549, 732, 756, 854, 914, 1098, 1281, 1371, 1647, 1708, 1828, 2196, 2562, 2742, 3199, 3294, 3843, 4113, 5124, 5484, 6398, 6588, 7686, 8226, 9597, 11529, 12339, 12796, 15372, 16452, 19194, 23058, 24678, 27877, 28791, 38388, 46116, 49356, 55754, 57582, 83631, 86373, 111508, 115164, 167262, 172746, 195139, 250893, 334524, 345492, 390278, 501786, 585417, 752679, 780556, 1003572, 1170834, 1505358, 1756251, 2341668, 3010716, 3512502, 5268753, 7025004, 10537506, 21075012]

約数ペア:

[(1, 21075012), (2, 10537506), (3, 7025004), (4, 5268753), (6, 3512502), (7, 3010716), (9, 2341668), (12, 1756251), (14, 1505358), (18, 1170834), (21, 1003572), (27, 780556), (28, 752679), (36, 585417), (42, 501786), (54, 390278), (61, 345492), (63, 334524), (84, 250893), (108, 195139), (122, 172746), (126, 167262), (183, 115164), (189, 111508), (244, 86373), (252, 83631), (366, 57582), (378, 55754), (427, 49356), (457, 46116), (549, 38388), (732, 28791), (756, 27877), (854, 24678), (914, 23058), (1098, 19194), (1281, 16452), (1371, 15372), (1647, 12796), (1708, 12339), (1828, 11529), (2196, 9597), (2562, 8226), (2742, 7686), (3199, 6588), (3294, 6398), (3843, 5484), (4113, 5124)]