21230440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:203

約数の個数: 128

約数和(自身を含む): 61067520

約数和(自身を除く): 39837080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 61, 70, 77, 88, 110, 113, 122, 140, 154, 220, 226, 244, 280, 305, 308, 385, 427, 440, 452, 488, 565, 610, 616, 671, 770, 791, 854, 904, 1130, 1220, 1243, 1342, 1540, 1582, 1708, 2135, 2260, 2440, 2486, 2684, 3080, 3164, 3355, 3416, 3955, 4270, 4520, 4697, 4972, 5368, 6215, 6328, 6710, 6893, 7910, 8540, 8701, 9394, 9944, 12430, 13420, 13786, 15820, 17080, 17402, 18788, 23485, 24860, 26840, 27572, 31640, 34465, 34804, 37576, 43505, 46970, 48251, 49720, 55144, 68930, 69608, 75823, 87010, 93940, 96502, 137860, 151646, 174020, 187880, 193004, 241255, 275720, 303292, 348040, 379115, 386008, 482510, 530761, 606584, 758230, 965020, 1061522, 1516460, 1930040, 2123044, 2653805, 3032920, 4246088, 5307610, 10615220, 21230440]

約数ペア:

[(1, 21230440), (2, 10615220), (4, 5307610), (5, 4246088), (7, 3032920), (8, 2653805), (10, 2123044), (11, 1930040), (14, 1516460), (20, 1061522), (22, 965020), (28, 758230), (35, 606584), (40, 530761), (44, 482510), (55, 386008), (56, 379115), (61, 348040), (70, 303292), (77, 275720), (88, 241255), (110, 193004), (113, 187880), (122, 174020), (140, 151646), (154, 137860), (220, 96502), (226, 93940), (244, 87010), (280, 75823), (305, 69608), (308, 68930), (385, 55144), (427, 49720), (440, 48251), (452, 46970), (488, 43505), (565, 37576), (610, 34804), (616, 34465), (671, 31640), (770, 27572), (791, 26840), (854, 24860), (904, 23485), (1130, 18788), (1220, 17402), (1243, 17080), (1342, 15820), (1540, 13786), (1582, 13420), (1708, 12430), (2135, 9944), (2260, 9394), (2440, 8701), (2486, 8540), (2684, 7910), (3080, 6893), (3164, 6710), (3355, 6328), (3416, 6215), (3955, 5368), (4270, 4972), (4520, 4697)]