19576760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 31226440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 503, 556, 695, 973, 1006, 1112, 1390, 1946, 2012, 2515, 2780, 3521, 3892, 4024, 4865, 5030, 5560, 7042, 7784, 9730, 10060, 14084, 17605, 19460, 20120, 28168, 35210, 38920, 69917, 70420, 139834, 140840, 279668, 349585, 489419, 559336, 699170, 978838, 1398340, 1957676, 2447095, 2796680, 3915352, 4894190, 9788380, 19576760]

約数ペア:

[(1, 19576760), (2, 9788380), (4, 4894190), (5, 3915352), (7, 2796680), (8, 2447095), (10, 1957676), (14, 1398340), (20, 978838), (28, 699170), (35, 559336), (40, 489419), (56, 349585), (70, 279668), (139, 140840), (140, 139834), (278, 70420), (280, 69917), (503, 38920), (556, 35210), (695, 28168), (973, 20120), (1006, 19460), (1112, 17605), (1390, 14084), (1946, 10060), (2012, 9730), (2515, 7784), (2780, 7042), (3521, 5560), (3892, 5030), (4024, 4865)]