20965420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1$

素因数の和:439

約数の個数: 96

約数和(自身を含む): 55738368

約数和(自身を除く): 34772948

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 23, 28, 34, 35, 46, 68, 70, 85, 92, 115, 119, 140, 161, 170, 230, 238, 322, 340, 383, 391, 460, 476, 595, 644, 766, 782, 805, 1190, 1532, 1564, 1610, 1915, 1955, 2380, 2681, 2737, 3220, 3830, 3910, 5362, 5474, 6511, 7660, 7820, 8809, 10724, 10948, 13022, 13405, 13685, 17618, 26044, 26810, 27370, 32555, 35236, 44045, 45577, 53620, 54740, 61663, 65110, 88090, 91154, 123326, 130220, 149753, 176180, 182308, 227885, 246652, 299506, 308315, 455770, 599012, 616630, 748765, 911540, 1048271, 1233260, 1497530, 2096542, 2995060, 4193084, 5241355, 10482710, 20965420]

約数ペア:

[(1, 20965420), (2, 10482710), (4, 5241355), (5, 4193084), (7, 2995060), (10, 2096542), (14, 1497530), (17, 1233260), (20, 1048271), (23, 911540), (28, 748765), (34, 616630), (35, 599012), (46, 455770), (68, 308315), (70, 299506), (85, 246652), (92, 227885), (115, 182308), (119, 176180), (140, 149753), (161, 130220), (170, 123326), (230, 91154), (238, 88090), (322, 65110), (340, 61663), (383, 54740), (391, 53620), (460, 45577), (476, 44045), (595, 35236), (644, 32555), (766, 27370), (782, 26810), (805, 26044), (1190, 17618), (1532, 13685), (1564, 13405), (1610, 13022), (1915, 10948), (1955, 10724), (2380, 8809), (2681, 7820), (2737, 7660), (3220, 6511), (3830, 5474), (3910, 5362)]