19150120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 47744640

約数和(自身を除く): 28594520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 613, 710, 781, 1226, 1420, 1562, 2452, 2840, 3065, 3124, 3905, 4904, 6130, 6248, 6743, 7810, 12260, 13486, 15620, 24520, 26972, 31240, 33715, 43523, 53944, 67430, 87046, 134860, 174092, 217615, 269720, 348184, 435230, 478753, 870460, 957506, 1740920, 1915012, 2393765, 3830024, 4787530, 9575060, 19150120]

約数ペア:

[(1, 19150120), (2, 9575060), (4, 4787530), (5, 3830024), (8, 2393765), (10, 1915012), (11, 1740920), (20, 957506), (22, 870460), (40, 478753), (44, 435230), (55, 348184), (71, 269720), (88, 217615), (110, 174092), (142, 134860), (220, 87046), (284, 67430), (355, 53944), (440, 43523), (568, 33715), (613, 31240), (710, 26972), (781, 24520), (1226, 15620), (1420, 13486), (1562, 12260), (2452, 7810), (2840, 6743), (3065, 6248), (3124, 6130), (3905, 4904)]