20347160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 27864040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 269, 305, 310, 488, 538, 610, 620, 1076, 1220, 1240, 1345, 1891, 2152, 2440, 2690, 3782, 5380, 7564, 8339, 9455, 10760, 15128, 16409, 16678, 18910, 32818, 33356, 37820, 41695, 65636, 66712, 75640, 82045, 83390, 131272, 164090, 166780, 328180, 333560, 508679, 656360, 1017358, 2034716, 2543395, 4069432, 5086790, 10173580, 20347160]

約数ペア:

[(1, 20347160), (2, 10173580), (4, 5086790), (5, 4069432), (8, 2543395), (10, 2034716), (20, 1017358), (31, 656360), (40, 508679), (61, 333560), (62, 328180), (122, 166780), (124, 164090), (155, 131272), (244, 83390), (248, 82045), (269, 75640), (305, 66712), (310, 65636), (488, 41695), (538, 37820), (610, 33356), (620, 32818), (1076, 18910), (1220, 16678), (1240, 16409), (1345, 15128), (1891, 10760), (2152, 9455), (2440, 8339), (2690, 7564), (3782, 5380)]