21000260000

素因数分解:

$2^5\times 5^4\times {\mathrm{1050013}}^1$

素因数の和:1050043

約数の個数: 60

約数和(自身を含む): 51663838842

約数和(自身を除く): 30663578842

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 4000, 5000, 10000, 20000, 1050013, 2100026, 4200052, 5250065, 8400104, 10500130, 16800208, 21000260, 26250325, 33600416, 42000520, 52500650, 84001040, 105001300, 131251625, 168002080, 210002600, 262503250, 420005200, 525006500, 656258125, 840010400, 1050013000, 1312516250, 2100026000, 2625032500, 4200052000, 5250065000, 10500130000, 21000260000]

約数ペア:

[(1, 21000260000), (2, 10500130000), (4, 5250065000), (5, 4200052000), (8, 2625032500), (10, 2100026000), (16, 1312516250), (20, 1050013000), (25, 840010400), (32, 656258125), (40, 525006500), (50, 420005200), (80, 262503250), (100, 210002600), (125, 168002080), (160, 131251625), (200, 105001300), (250, 84001040), (400, 52500650), (500, 42000520), (625, 33600416), (800, 26250325), (1000, 21000260), (1250, 16800208), (2000, 10500130), (2500, 8400104), (4000, 5250065), (5000, 4200052), (10000, 2100026), (20000, 1050013)]