19801560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5323}}^1$

素因数の和:5368

約数の個数: 64

約数和(自身を含む): 61332480

約数和(自身を除く): 41530920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5323, 10646, 15969, 21292, 26615, 31938, 42584, 53230, 63876, 79845, 106460, 127752, 159690, 165013, 212920, 319380, 330026, 495039, 638760, 660052, 825065, 990078, 1320104, 1650130, 1980156, 2475195, 3300260, 3960312, 4950390, 6600520, 9900780, 19801560]

約数ペア:

[(1, 19801560), (2, 9900780), (3, 6600520), (4, 4950390), (5, 3960312), (6, 3300260), (8, 2475195), (10, 1980156), (12, 1650130), (15, 1320104), (20, 990078), (24, 825065), (30, 660052), (31, 638760), (40, 495039), (60, 330026), (62, 319380), (93, 212920), (120, 165013), (124, 159690), (155, 127752), (186, 106460), (248, 79845), (310, 63876), (372, 53230), (465, 42584), (620, 31938), (744, 26615), (930, 21292), (1240, 15969), (1860, 10646), (3720, 5323)]