81211816

素因数分解:

$2^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 188455680

約数和(自身を除く): 107243864

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 41, 49, 56, 62, 82, 98, 124, 163, 164, 196, 217, 248, 287, 326, 328, 392, 434, 574, 652, 868, 1141, 1148, 1271, 1304, 1519, 1736, 2009, 2282, 2296, 2542, 3038, 4018, 4564, 5053, 5084, 6076, 6683, 7987, 8036, 8897, 9128, 10106, 10168, 12152, 13366, 15974, 16072, 17794, 20212, 26732, 31948, 35371, 35588, 40424, 46781, 53464, 62279, 63896, 70742, 71176, 93562, 124558, 141484, 187124, 207173, 247597, 249116, 282968, 327467, 374248, 414346, 495194, 498232, 654934, 828692, 990388, 1309868, 1450211, 1657384, 1980776, 2619736, 2900422, 5800844, 10151477, 11601688, 20302954, 40605908, 81211816]

約数ペア:

[(1, 81211816), (2, 40605908), (4, 20302954), (7, 11601688), (8, 10151477), (14, 5800844), (28, 2900422), (31, 2619736), (41, 1980776), (49, 1657384), (56, 1450211), (62, 1309868), (82, 990388), (98, 828692), (124, 654934), (163, 498232), (164, 495194), (196, 414346), (217, 374248), (248, 327467), (287, 282968), (326, 249116), (328, 247597), (392, 207173), (434, 187124), (574, 141484), (652, 124558), (868, 93562), (1141, 71176), (1148, 70742), (1271, 63896), (1304, 62279), (1519, 53464), (1736, 46781), (2009, 40424), (2282, 35588), (2296, 35371), (2542, 31948), (3038, 26732), (4018, 20212), (4564, 17794), (5053, 16072), (5084, 15974), (6076, 13366), (6683, 12152), (7987, 10168), (8036, 10106), (8897, 9128)]