19736340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25303}}^1$

素因数の和:25328

約数の個数: 48

約数和(自身を含む): 59515008

約数和(自身を除く): 39778668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25303, 50606, 75909, 101212, 126515, 151818, 253030, 303636, 328939, 379545, 506060, 657878, 759090, 986817, 1315756, 1518180, 1644695, 1973634, 3289390, 3947268, 4934085, 6578780, 9868170, 19736340]

約数ペア:

[(1, 19736340), (2, 9868170), (3, 6578780), (4, 4934085), (5, 3947268), (6, 3289390), (10, 1973634), (12, 1644695), (13, 1518180), (15, 1315756), (20, 986817), (26, 759090), (30, 657878), (39, 506060), (52, 379545), (60, 328939), (65, 303636), (78, 253030), (130, 151818), (156, 126515), (195, 101212), (260, 75909), (390, 50606), (780, 25303)]