20038400

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:158

約数の個数: 108

約数和(自身を含む): 51705024

約数和(自身を除く): 31666624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 101, 124, 128, 155, 160, 200, 202, 248, 256, 310, 320, 400, 404, 496, 505, 620, 640, 775, 800, 808, 992, 1010, 1240, 1280, 1550, 1600, 1616, 1984, 2020, 2480, 2525, 3100, 3131, 3200, 3232, 3968, 4040, 4960, 5050, 6200, 6262, 6400, 6464, 7936, 8080, 9920, 10100, 12400, 12524, 12928, 15655, 16160, 19840, 20200, 24800, 25048, 25856, 31310, 32320, 39680, 40400, 49600, 50096, 62620, 64640, 78275, 80800, 99200, 100192, 125240, 129280, 156550, 161600, 198400, 200384, 250480, 313100, 323200, 400768, 500960, 626200, 646400, 801536, 1001920, 1252400, 2003840, 2504800, 4007680, 5009600, 10019200, 20038400]

約数ペア:

[(1, 20038400), (2, 10019200), (4, 5009600), (5, 4007680), (8, 2504800), (10, 2003840), (16, 1252400), (20, 1001920), (25, 801536), (31, 646400), (32, 626200), (40, 500960), (50, 400768), (62, 323200), (64, 313100), (80, 250480), (100, 200384), (101, 198400), (124, 161600), (128, 156550), (155, 129280), (160, 125240), (200, 100192), (202, 99200), (248, 80800), (256, 78275), (310, 64640), (320, 62620), (400, 50096), (404, 49600), (496, 40400), (505, 39680), (620, 32320), (640, 31310), (775, 25856), (800, 25048), (808, 24800), (992, 20200), (1010, 19840), (1240, 16160), (1280, 15655), (1550, 12928), (1600, 12524), (1616, 12400), (1984, 10100), (2020, 9920), (2480, 8080), (2525, 7936), (3100, 6464), (3131, 6400), (3200, 6262), (3232, 6200), (3968, 5050), (4040, 4960)]