21341008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 47496960

約数和(自身を除く): 26155952

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 47, 52, 59, 74, 94, 104, 118, 148, 188, 208, 236, 296, 376, 472, 481, 592, 611, 752, 767, 944, 962, 1222, 1534, 1739, 1924, 2183, 2444, 2773, 3068, 3478, 3848, 4366, 4888, 5546, 6136, 6956, 7696, 8732, 9776, 11092, 12272, 13912, 17464, 22184, 22607, 27824, 28379, 34928, 36049, 44368, 45214, 56758, 72098, 90428, 102601, 113516, 144196, 180856, 205202, 227032, 288392, 361712, 410404, 454064, 576784, 820808, 1333813, 1641616, 2667626, 5335252, 10670504, 21341008]

約数ペア:

[(1, 21341008), (2, 10670504), (4, 5335252), (8, 2667626), (13, 1641616), (16, 1333813), (26, 820808), (37, 576784), (47, 454064), (52, 410404), (59, 361712), (74, 288392), (94, 227032), (104, 205202), (118, 180856), (148, 144196), (188, 113516), (208, 102601), (236, 90428), (296, 72098), (376, 56758), (472, 45214), (481, 44368), (592, 36049), (611, 34928), (752, 28379), (767, 27824), (944, 22607), (962, 22184), (1222, 17464), (1534, 13912), (1739, 12272), (1924, 11092), (2183, 9776), (2444, 8732), (2773, 7696), (3068, 6956), (3478, 6136), (3848, 5546), (4366, 4888)]