19700500

素因数分解:

$2^2\times 5^3\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:122

約数の個数: 72

約数和(自身を含む): 45542952

約数和(自身を除く): 25842452

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 125, 155, 164, 205, 250, 310, 410, 500, 620, 775, 820, 961, 1025, 1271, 1550, 1922, 2050, 2542, 3100, 3844, 3875, 4100, 4805, 5084, 5125, 6355, 7750, 9610, 10250, 12710, 15500, 19220, 20500, 24025, 25420, 31775, 39401, 48050, 63550, 78802, 96100, 120125, 127100, 157604, 158875, 197005, 240250, 317750, 394010, 480500, 635500, 788020, 985025, 1970050, 3940100, 4925125, 9850250, 19700500]

約数ペア:

[(1, 19700500), (2, 9850250), (4, 4925125), (5, 3940100), (10, 1970050), (20, 985025), (25, 788020), (31, 635500), (41, 480500), (50, 394010), (62, 317750), (82, 240250), (100, 197005), (124, 158875), (125, 157604), (155, 127100), (164, 120125), (205, 96100), (250, 78802), (310, 63550), (410, 48050), (500, 39401), (620, 31775), (775, 25420), (820, 24025), (961, 20500), (1025, 19220), (1271, 15500), (1550, 12710), (1922, 10250), (2050, 9610), (2542, 7750), (3100, 6355), (3844, 5125), (3875, 5084), (4100, 4805)]