20736957040

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{61381}}^1$

素因数の和:61538

約数の個数: 80

約数和(自身を含む): 49869683136

約数和(自身を除く): 29132726096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 103, 164, 205, 206, 328, 410, 412, 515, 656, 820, 824, 1030, 1640, 1648, 2060, 3280, 4120, 4223, 8240, 8446, 16892, 21115, 33784, 42230, 61381, 67568, 84460, 122762, 168920, 245524, 306905, 337840, 491048, 613810, 982096, 1227620, 2455240, 2516621, 4910480, 5033242, 6322243, 10066484, 12583105, 12644486, 20132968, 25166210, 25288972, 31611215, 40265936, 50332420, 50577944, 63222430, 100664840, 101155888, 126444860, 201329680, 252889720, 259211963, 505779440, 518423926, 1036847852, 1296059815, 2073695704, 2592119630, 4147391408, 5184239260, 10368478520, 20736957040]

約数ペア:

[(1, 20736957040), (2, 10368478520), (4, 5184239260), (5, 4147391408), (8, 2592119630), (10, 2073695704), (16, 1296059815), (20, 1036847852), (40, 518423926), (41, 505779440), (80, 259211963), (82, 252889720), (103, 201329680), (164, 126444860), (205, 101155888), (206, 100664840), (328, 63222430), (410, 50577944), (412, 50332420), (515, 40265936), (656, 31611215), (820, 25288972), (824, 25166210), (1030, 20132968), (1640, 12644486), (1648, 12583105), (2060, 10066484), (3280, 6322243), (4120, 5033242), (4223, 4910480), (8240, 2516621), (8446, 2455240), (16892, 1227620), (21115, 982096), (33784, 613810), (42230, 491048), (61381, 337840), (67568, 306905), (84460, 245524), (122762, 168920)]