19396780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1223}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 25225364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1223, 1586, 2446, 3172, 3965, 4892, 6115, 7930, 12230, 15860, 15899, 24460, 31798, 63596, 74603, 79495, 149206, 158990, 298412, 317980, 373015, 746030, 969839, 1492060, 1939678, 3879356, 4849195, 9698390, 19396780]

約数ペア:

[(1, 19396780), (2, 9698390), (4, 4849195), (5, 3879356), (10, 1939678), (13, 1492060), (20, 969839), (26, 746030), (52, 373015), (61, 317980), (65, 298412), (122, 158990), (130, 149206), (244, 79495), (260, 74603), (305, 63596), (610, 31798), (793, 24460), (1220, 15899), (1223, 15860), (1586, 12230), (2446, 7930), (3172, 6115), (3965, 4892)]