19712917520

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1\times {\mathrm{18523}}^1$

素因数の和:18840

約数の個数: 80

約数和(自身を含む): 46885874112

約数和(自身を除く): 27172956592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 251, 265, 424, 502, 530, 848, 1004, 1060, 1255, 2008, 2120, 2510, 4016, 4240, 5020, 10040, 13303, 18523, 20080, 26606, 37046, 53212, 66515, 74092, 92615, 106424, 133030, 148184, 185230, 212848, 266060, 296368, 370460, 532120, 740920, 981719, 1064240, 1481840, 1963438, 3926876, 4649273, 4908595, 7853752, 9298546, 9817190, 15707504, 18597092, 19634380, 23246365, 37194184, 39268760, 46492730, 74388368, 78537520, 92985460, 185970920, 246411469, 371941840, 492822938, 985645876, 1232057345, 1971291752, 2464114690, 3942583504, 4928229380, 9856458760, 19712917520]

約数ペア:

[(1, 19712917520), (2, 9856458760), (4, 4928229380), (5, 3942583504), (8, 2464114690), (10, 1971291752), (16, 1232057345), (20, 985645876), (40, 492822938), (53, 371941840), (80, 246411469), (106, 185970920), (212, 92985460), (251, 78537520), (265, 74388368), (424, 46492730), (502, 39268760), (530, 37194184), (848, 23246365), (1004, 19634380), (1060, 18597092), (1255, 15707504), (2008, 9817190), (2120, 9298546), (2510, 7853752), (4016, 4908595), (4240, 4649273), (5020, 3926876), (10040, 1963438), (13303, 1481840), (18523, 1064240), (20080, 981719), (26606, 740920), (37046, 532120), (53212, 370460), (66515, 296368), (74092, 266060), (92615, 212848), (106424, 185230), (133030, 148184)]