20358540

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45685620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 59, 60, 71, 81, 90, 108, 118, 135, 142, 162, 177, 180, 213, 236, 243, 270, 284, 295, 324, 354, 355, 405, 426, 486, 531, 540, 590, 639, 708, 710, 810, 852, 885, 972, 1062, 1065, 1180, 1215, 1278, 1420, 1593, 1620, 1770, 1917, 2124, 2130, 2430, 2556, 2655, 3186, 3195, 3540, 3834, 4189, 4260, 4779, 4860, 5310, 5751, 6372, 6390, 7668, 7965, 8378, 9558, 9585, 10620, 11502, 12567, 12780, 14337, 15930, 16756, 17253, 19116, 19170, 20945, 23004, 23895, 25134, 28674, 28755, 31860, 34506, 37701, 38340, 41890, 47790, 50268, 57348, 57510, 62835, 69012, 71685, 75402, 83780, 86265, 95580, 113103, 115020, 125670, 143370, 150804, 172530, 188505, 226206, 251340, 286740, 339309, 345060, 377010, 452412, 565515, 678618, 754020, 1017927, 1131030, 1357236, 1696545, 2035854, 2262060, 3393090, 4071708, 5089635, 6786180, 10179270, 20358540]

約数ペア:

[(1, 20358540), (2, 10179270), (3, 6786180), (4, 5089635), (5, 4071708), (6, 3393090), (9, 2262060), (10, 2035854), (12, 1696545), (15, 1357236), (18, 1131030), (20, 1017927), (27, 754020), (30, 678618), (36, 565515), (45, 452412), (54, 377010), (59, 345060), (60, 339309), (71, 286740), (81, 251340), (90, 226206), (108, 188505), (118, 172530), (135, 150804), (142, 143370), (162, 125670), (177, 115020), (180, 113103), (213, 95580), (236, 86265), (243, 83780), (270, 75402), (284, 71685), (295, 69012), (324, 62835), (354, 57510), (355, 57348), (405, 50268), (426, 47790), (486, 41890), (531, 38340), (540, 37701), (590, 34506), (639, 31860), (708, 28755), (710, 28674), (810, 25134), (852, 23895), (885, 23004), (972, 20945), (1062, 19170), (1065, 19116), (1180, 17253), (1215, 16756), (1278, 15930), (1420, 14337), (1593, 12780), (1620, 12567), (1770, 11502), (1917, 10620), (2124, 9585), (2130, 9558), (2430, 8378), (2556, 7965), (2655, 7668), (3186, 6390), (3195, 6372), (3540, 5751), (3834, 5310), (4189, 4860), (4260, 4779)]