21621660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4049}}^1$

素因数の和:4150

約数の個数: 48

約数和(自身を含む): 61236000

約数和(自身を除く): 39614340

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, 4049, 5340, 8098, 12147, 16196, 20245, 24294, 40490, 48588, 60735, 80980, 121470, 242940, 360361, 720722, 1081083, 1441444, 1801805, 2162166, 3603610, 4324332, 5405415, 7207220, 10810830, 21621660]

約数ペア:

[(1, 21621660), (2, 10810830), (3, 7207220), (4, 5405415), (5, 4324332), (6, 3603610), (10, 2162166), (12, 1801805), (15, 1441444), (20, 1081083), (30, 720722), (60, 360361), (89, 242940), (178, 121470), (267, 80980), (356, 60735), (445, 48588), (534, 40490), (890, 24294), (1068, 20245), (1335, 16196), (1780, 12147), (2670, 8098), (4049, 5340)]