20539360

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 51819264

約数和(自身を除く): 31279904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 80, 82, 101, 124, 155, 160, 164, 202, 205, 248, 310, 328, 404, 410, 496, 505, 620, 656, 808, 820, 992, 1010, 1240, 1271, 1312, 1616, 1640, 2020, 2480, 2542, 3131, 3232, 3280, 4040, 4141, 4960, 5084, 6262, 6355, 6560, 8080, 8282, 10168, 12524, 12710, 15655, 16160, 16564, 20336, 20705, 25048, 25420, 31310, 33128, 40672, 41410, 50096, 50840, 62620, 66256, 82820, 100192, 101680, 125240, 128371, 132512, 165640, 203360, 250480, 256742, 331280, 500960, 513484, 641855, 662560, 1026968, 1283710, 2053936, 2567420, 4107872, 5134840, 10269680, 20539360]

約数ペア:

[(1, 20539360), (2, 10269680), (4, 5134840), (5, 4107872), (8, 2567420), (10, 2053936), (16, 1283710), (20, 1026968), (31, 662560), (32, 641855), (40, 513484), (41, 500960), (62, 331280), (80, 256742), (82, 250480), (101, 203360), (124, 165640), (155, 132512), (160, 128371), (164, 125240), (202, 101680), (205, 100192), (248, 82820), (310, 66256), (328, 62620), (404, 50840), (410, 50096), (496, 41410), (505, 40672), (620, 33128), (656, 31310), (808, 25420), (820, 25048), (992, 20705), (1010, 20336), (1240, 16564), (1271, 16160), (1312, 15655), (1616, 12710), (1640, 12524), (2020, 10168), (2480, 8282), (2542, 8080), (3131, 6560), (3232, 6355), (3280, 6262), (4040, 5084), (4141, 4960)]