19478520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:965

約数の個数: 96

約数和(自身を含む): 64415520

約数和(自身を除く): 44937000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 61, 72, 90, 120, 122, 180, 183, 244, 305, 360, 366, 488, 549, 610, 732, 887, 915, 1098, 1220, 1464, 1774, 1830, 2196, 2440, 2661, 2745, 3548, 3660, 4392, 4435, 5322, 5490, 7096, 7320, 7983, 8870, 10644, 10980, 13305, 15966, 17740, 21288, 21960, 26610, 31932, 35480, 39915, 53220, 54107, 63864, 79830, 106440, 108214, 159660, 162321, 216428, 270535, 319320, 324642, 432856, 486963, 541070, 649284, 811605, 973926, 1082140, 1298568, 1623210, 1947852, 2164280, 2434815, 3246420, 3895704, 4869630, 6492840, 9739260, 19478520]

約数ペア:

[(1, 19478520), (2, 9739260), (3, 6492840), (4, 4869630), (5, 3895704), (6, 3246420), (8, 2434815), (9, 2164280), (10, 1947852), (12, 1623210), (15, 1298568), (18, 1082140), (20, 973926), (24, 811605), (30, 649284), (36, 541070), (40, 486963), (45, 432856), (60, 324642), (61, 319320), (72, 270535), (90, 216428), (120, 162321), (122, 159660), (180, 108214), (183, 106440), (244, 79830), (305, 63864), (360, 54107), (366, 53220), (488, 39915), (549, 35480), (610, 31932), (732, 26610), (887, 21960), (915, 21288), (1098, 17740), (1220, 15966), (1464, 13305), (1774, 10980), (1830, 10644), (2196, 8870), (2440, 7983), (2661, 7320), (2745, 7096), (3548, 5490), (3660, 5322), (4392, 4435)]