21132735

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 39070080

約数和(自身を除く): 17937345

約数列:

[1, 3, 5, 13, 15, 29, 37, 39, 65, 87, 101, 111, 145, 185, 195, 303, 377, 435, 481, 505, 555, 1073, 1131, 1313, 1443, 1515, 1885, 2405, 2929, 3219, 3737, 3939, 5365, 5655, 6565, 7215, 8787, 11211, 13949, 14645, 16095, 18685, 19695, 38077, 41847, 43935, 48581, 56055, 69745, 108373, 114231, 145743, 190385, 209235, 242905, 325119, 541865, 571155, 728715, 1408849, 1625595, 4226547, 7044245, 21132735]

約数ペア:

[(1, 21132735), (3, 7044245), (5, 4226547), (13, 1625595), (15, 1408849), (29, 728715), (37, 571155), (39, 541865), (65, 325119), (87, 242905), (101, 209235), (111, 190385), (145, 145743), (185, 114231), (195, 108373), (303, 69745), (377, 56055), (435, 48581), (481, 43935), (505, 41847), (555, 38077), (1073, 19695), (1131, 18685), (1313, 16095), (1443, 14645), (1515, 13949), (1885, 11211), (2405, 8787), (2929, 7215), (3219, 6565), (3737, 5655), (3939, 5365)]