21894120

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1075

約数の個数: 96

約数和(自身を含む): 72394920

約数和(自身を除く): 50500800

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, 915, 997, 1098, 1220, 1464, 1830, 1994, 2196, 2440, 2745, 2991, 3660, 3988, 4392, 4985, 5490, 5982, 7320, 7976, 8973, 9970, 10980, 11964, 14955, 17946, 19940, 21960, 23928, 29910, 35892, 39880, 44865, 59820, 60817, 71784, 89730, 119640, 121634, 179460, 182451, 243268, 304085, 358920, 364902, 486536, 547353, 608170, 729804, 912255, 1094706, 1216340, 1459608, 1824510, 2189412, 2432680, 2736765, 3649020, 4378824, 5473530, 7298040, 10947060, 21894120]

約数ペア:

[(1, 21894120), (2, 10947060), (3, 7298040), (4, 5473530), (5, 4378824), (6, 3649020), (8, 2736765), (9, 2432680), (10, 2189412), (12, 1824510), (15, 1459608), (18, 1216340), (20, 1094706), (24, 912255), (30, 729804), (36, 608170), (40, 547353), (45, 486536), (60, 364902), (61, 358920), (72, 304085), (90, 243268), (120, 182451), (122, 179460), (180, 121634), (183, 119640), (244, 89730), (305, 71784), (360, 60817), (366, 59820), (488, 44865), (549, 39880), (610, 35892), (732, 29910), (915, 23928), (997, 21960), (1098, 19940), (1220, 17946), (1464, 14955), (1830, 11964), (1994, 10980), (2196, 9970), (2440, 8973), (2745, 7976), (2991, 7320), (3660, 5982), (3988, 5490), (4392, 4985)]