20130731720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2441}}^1\times {\mathrm{18743}}^1$

素因数の和:21206

約数の個数: 64

約数和(自身を含む): 49434675840

約数和(自身を除く): 29303944120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2441, 4882, 9764, 12205, 18743, 19528, 24410, 26851, 37486, 48820, 53702, 74972, 93715, 97640, 107404, 134255, 149944, 187430, 206173, 214808, 268510, 374860, 412346, 537020, 749720, 824692, 1030865, 1074040, 1649384, 2061730, 4123460, 8246920, 45751663, 91503326, 183006652, 228758315, 366013304, 457516630, 503268293, 915033260, 1006536586, 1830066520, 2013073172, 2516341465, 4026146344, 5032682930, 10065365860, 20130731720]

約数ペア:

[(1, 20130731720), (2, 10065365860), (4, 5032682930), (5, 4026146344), (8, 2516341465), (10, 2013073172), (11, 1830066520), (20, 1006536586), (22, 915033260), (40, 503268293), (44, 457516630), (55, 366013304), (88, 228758315), (110, 183006652), (220, 91503326), (440, 45751663), (2441, 8246920), (4882, 4123460), (9764, 2061730), (12205, 1649384), (18743, 1074040), (19528, 1030865), (24410, 824692), (26851, 749720), (37486, 537020), (48820, 412346), (53702, 374860), (74972, 268510), (93715, 214808), (97640, 206173), (107404, 187430), (134255, 149944)]