21800750

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 22228690

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 97, 125, 145, 155, 194, 250, 290, 310, 485, 725, 775, 899, 970, 1450, 1550, 1798, 2425, 2813, 3007, 3625, 3875, 4495, 4850, 5626, 6014, 7250, 7750, 8990, 12125, 14065, 15035, 22475, 24250, 28130, 30070, 44950, 70325, 75175, 87203, 112375, 140650, 150350, 174406, 224750, 351625, 375875, 436015, 703250, 751750, 872030, 2180075, 4360150, 10900375, 21800750]

約数ペア:

[(1, 21800750), (2, 10900375), (5, 4360150), (10, 2180075), (25, 872030), (29, 751750), (31, 703250), (50, 436015), (58, 375875), (62, 351625), (97, 224750), (125, 174406), (145, 150350), (155, 140650), (194, 112375), (250, 87203), (290, 75175), (310, 70325), (485, 44950), (725, 30070), (775, 28130), (899, 24250), (970, 22475), (1450, 15035), (1550, 14065), (1798, 12125), (2425, 8990), (2813, 7750), (3007, 7250), (3625, 6014), (3875, 5626), (4495, 4850)]