21098070

素因数分解:

$2^1\times 3^4\times 5^1\times 7^1\times {\mathrm{61}}^2$

素因数の和:148

約数の個数: 120

約数和(自身を含む): 65914992

約数和(自身を除く): 44816922

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 61, 63, 70, 81, 90, 105, 122, 126, 135, 162, 183, 189, 210, 270, 305, 315, 366, 378, 405, 427, 549, 567, 610, 630, 810, 854, 915, 945, 1098, 1134, 1281, 1647, 1830, 1890, 2135, 2562, 2745, 2835, 3294, 3721, 3843, 4270, 4941, 5490, 5670, 6405, 7442, 7686, 8235, 9882, 11163, 11529, 12810, 16470, 18605, 19215, 22326, 23058, 24705, 26047, 33489, 34587, 37210, 38430, 49410, 52094, 55815, 57645, 66978, 69174, 78141, 100467, 111630, 115290, 130235, 156282, 167445, 172935, 200934, 234423, 260470, 301401, 334890, 345870, 390705, 468846, 502335, 602802, 703269, 781410, 1004670, 1172115, 1406538, 1507005, 2109807, 2344230, 3014010, 3516345, 4219614, 7032690, 10549035, 21098070]

約数ペア:

[(1, 21098070), (2, 10549035), (3, 7032690), (5, 4219614), (6, 3516345), (7, 3014010), (9, 2344230), (10, 2109807), (14, 1507005), (15, 1406538), (18, 1172115), (21, 1004670), (27, 781410), (30, 703269), (35, 602802), (42, 502335), (45, 468846), (54, 390705), (61, 345870), (63, 334890), (70, 301401), (81, 260470), (90, 234423), (105, 200934), (122, 172935), (126, 167445), (135, 156282), (162, 130235), (183, 115290), (189, 111630), (210, 100467), (270, 78141), (305, 69174), (315, 66978), (366, 57645), (378, 55815), (405, 52094), (427, 49410), (549, 38430), (567, 37210), (610, 34587), (630, 33489), (810, 26047), (854, 24705), (915, 23058), (945, 22326), (1098, 19215), (1134, 18605), (1281, 16470), (1647, 12810), (1830, 11529), (1890, 11163), (2135, 9882), (2562, 8235), (2745, 7686), (2835, 7442), (3294, 6405), (3721, 5670), (3843, 5490), (4270, 4941)]