203980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 516096

約数和(自身を除く): 312116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 47, 62, 70, 94, 124, 140, 155, 188, 217, 235, 310, 329, 434, 470, 620, 658, 868, 940, 1085, 1316, 1457, 1645, 2170, 2914, 3290, 4340, 5828, 6580, 7285, 10199, 14570, 20398, 29140, 40796, 50995, 101990, 203980]

約数ペア:

[(1, 203980), (2, 101990), (4, 50995), (5, 40796), (7, 29140), (10, 20398), (14, 14570), (20, 10199), (28, 7285), (31, 6580), (35, 5828), (47, 4340), (62, 3290), (70, 2914), (94, 2170), (124, 1645), (140, 1457), (155, 1316), (188, 1085), (217, 940), (235, 868), (310, 658), (329, 620), (434, 470)]