20542980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3847}}^1$

素因数の和:3948

約数の個数: 48

約数和(自身を含む): 58181760

約数和(自身を除く): 37638780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 3847, 5340, 7694, 11541, 15388, 19235, 23082, 38470, 46164, 57705, 76940, 115410, 230820, 342383, 684766, 1027149, 1369532, 1711915, 2054298, 3423830, 4108596, 5135745, 6847660, 10271490, 20542980]

約数ペア:

[(1, 20542980), (2, 10271490), (3, 6847660), (4, 5135745), (5, 4108596), (6, 3423830), (10, 2054298), (12, 1711915), (15, 1369532), (20, 1027149), (30, 684766), (60, 342383), (89, 230820), (178, 115410), (267, 76940), (356, 57705), (445, 46164), (534, 38470), (890, 23082), (1068, 19235), (1335, 15388), (1780, 11541), (2670, 7694), (3847, 5340)]