78855210

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{17881}}^1$

素因数の和:17908

約数の個数: 72

約数和(自身を含む): 238510116

約数和(自身を除く): 159654906

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 17881, 35762, 53643, 89405, 107286, 125167, 160929, 178810, 250334, 268215, 321858, 375501, 536430, 625835, 751002, 804645, 876169, 1126503, 1251670, 1609290, 1752338, 1877505, 2253006, 2628507, 3755010, 4380845, 5257014, 5632515, 7885521, 8761690, 11265030, 13142535, 15771042, 26285070, 39427605, 78855210]

約数ペア:

[(1, 78855210), (2, 39427605), (3, 26285070), (5, 15771042), (6, 13142535), (7, 11265030), (9, 8761690), (10, 7885521), (14, 5632515), (15, 5257014), (18, 4380845), (21, 3755010), (30, 2628507), (35, 2253006), (42, 1877505), (45, 1752338), (49, 1609290), (63, 1251670), (70, 1126503), (90, 876169), (98, 804645), (105, 751002), (126, 625835), (147, 536430), (210, 375501), (245, 321858), (294, 268215), (315, 250334), (441, 178810), (490, 160929), (630, 125167), (735, 107286), (882, 89405), (1470, 53643), (2205, 35762), (4410, 17881)]