19709180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 23642884

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 383, 415, 620, 766, 830, 1532, 1660, 1915, 2573, 3830, 5146, 7660, 10292, 11873, 12865, 23746, 25730, 31789, 47492, 51460, 59365, 63578, 118730, 127156, 158945, 237460, 317890, 635780, 985459, 1970918, 3941836, 4927295, 9854590, 19709180]

約数ペア:

[(1, 19709180), (2, 9854590), (4, 4927295), (5, 3941836), (10, 1970918), (20, 985459), (31, 635780), (62, 317890), (83, 237460), (124, 158945), (155, 127156), (166, 118730), (310, 63578), (332, 59365), (383, 51460), (415, 47492), (620, 31789), (766, 25730), (830, 23746), (1532, 12865), (1660, 11873), (1915, 10292), (2573, 7660), (3830, 5146)]