19147460

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{347}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 22946620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 347, 356, 445, 620, 694, 890, 1388, 1735, 1780, 2759, 3470, 5518, 6940, 10757, 11036, 13795, 21514, 27590, 30883, 43028, 53785, 55180, 61766, 107570, 123532, 154415, 215140, 308830, 617660, 957373, 1914746, 3829492, 4786865, 9573730, 19147460]

約数ペア:

[(1, 19147460), (2, 9573730), (4, 4786865), (5, 3829492), (10, 1914746), (20, 957373), (31, 617660), (62, 308830), (89, 215140), (124, 154415), (155, 123532), (178, 107570), (310, 61766), (347, 55180), (356, 53785), (445, 43028), (620, 30883), (694, 27590), (890, 21514), (1388, 13795), (1735, 11036), (1780, 10757), (2759, 6940), (3470, 5518)]