40100000

素因数分解:

$2^5\times 5^5\times {\mathrm{401}}^1$

素因数の和:436

約数の個数: 72

約数和(自身を含む): 98923356

約数和(自身を除く): 58823356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 401, 500, 625, 800, 802, 1000, 1250, 1604, 2000, 2005, 2500, 3125, 3208, 4000, 4010, 5000, 6250, 6416, 8020, 10000, 10025, 12500, 12832, 16040, 20000, 20050, 25000, 32080, 40100, 50000, 50125, 64160, 80200, 100000, 100250, 160400, 200500, 250625, 320800, 401000, 501250, 802000, 1002500, 1253125, 1604000, 2005000, 2506250, 4010000, 5012500, 8020000, 10025000, 20050000, 40100000]

約数ペア:

[(1, 40100000), (2, 20050000), (4, 10025000), (5, 8020000), (8, 5012500), (10, 4010000), (16, 2506250), (20, 2005000), (25, 1604000), (32, 1253125), (40, 1002500), (50, 802000), (80, 501250), (100, 401000), (125, 320800), (160, 250625), (200, 200500), (250, 160400), (400, 100250), (401, 100000), (500, 80200), (625, 64160), (800, 50125), (802, 50000), (1000, 40100), (1250, 32080), (1604, 25000), (2000, 20050), (2005, 20000), (2500, 16040), (3125, 12832), (3208, 12500), (4000, 10025), (4010, 10000), (5000, 8020), (6250, 6416)]