20629875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 40734720

約数和(自身を除く): 20104845

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 75, 87, 105, 125, 145, 175, 203, 271, 375, 435, 525, 609, 725, 813, 875, 1015, 1355, 1897, 2175, 2625, 3045, 3625, 4065, 5075, 5691, 6775, 7859, 9485, 10875, 15225, 20325, 23577, 25375, 28455, 33875, 39295, 47425, 55013, 76125, 101625, 117885, 142275, 165039, 196475, 237125, 275065, 589425, 711375, 825195, 982375, 1375325, 2947125, 4125975, 6876625, 20629875]

約数ペア:

[(1, 20629875), (3, 6876625), (5, 4125975), (7, 2947125), (15, 1375325), (21, 982375), (25, 825195), (29, 711375), (35, 589425), (75, 275065), (87, 237125), (105, 196475), (125, 165039), (145, 142275), (175, 117885), (203, 101625), (271, 76125), (375, 55013), (435, 47425), (525, 39295), (609, 33875), (725, 28455), (813, 25375), (875, 23577), (1015, 20325), (1355, 15225), (1897, 10875), (2175, 9485), (2625, 7859), (3045, 6775), (3625, 5691), (4065, 5075)]