20213641520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{797}}^1\times {\mathrm{4013}}^1$

素因数の和:4902

約数の個数: 80

約数和(自身を含む): 47663199360

約数和(自身を除く): 27449557840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 797, 1264, 1580, 1594, 3160, 3188, 3985, 4013, 6320, 6376, 7970, 8026, 12752, 15940, 16052, 20065, 31880, 32104, 40130, 62963, 63760, 64208, 80260, 125926, 160520, 251852, 314815, 317027, 321040, 503704, 629630, 634054, 1007408, 1259260, 1268108, 1585135, 2518520, 2536216, 3170270, 3198361, 5037040, 5072432, 6340540, 6396722, 12681080, 12793444, 15991805, 25362160, 25586888, 31983610, 51173776, 63967220, 127934440, 252670519, 255868880, 505341038, 1010682076, 1263352595, 2021364152, 2526705190, 4042728304, 5053410380, 10106820760, 20213641520]

約数ペア:

[(1, 20213641520), (2, 10106820760), (4, 5053410380), (5, 4042728304), (8, 2526705190), (10, 2021364152), (16, 1263352595), (20, 1010682076), (40, 505341038), (79, 255868880), (80, 252670519), (158, 127934440), (316, 63967220), (395, 51173776), (632, 31983610), (790, 25586888), (797, 25362160), (1264, 15991805), (1580, 12793444), (1594, 12681080), (3160, 6396722), (3188, 6340540), (3985, 5072432), (4013, 5037040), (6320, 3198361), (6376, 3170270), (7970, 2536216), (8026, 2518520), (12752, 1585135), (15940, 1268108), (16052, 1259260), (20065, 1007408), (31880, 634054), (32104, 629630), (40130, 503704), (62963, 321040), (63760, 317027), (64208, 314815), (80260, 251852), (125926, 160520)]