18874764

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 49729680

約数和(自身を除く): 30854916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 89, 129, 137, 172, 178, 258, 267, 274, 356, 387, 411, 516, 534, 548, 774, 801, 822, 1068, 1233, 1548, 1602, 1644, 2466, 3204, 3827, 4932, 5891, 7654, 11481, 11782, 12193, 15308, 17673, 22962, 23564, 24386, 34443, 35346, 36579, 45924, 48772, 53019, 68886, 70692, 73158, 106038, 109737, 137772, 146316, 212076, 219474, 438948, 524299, 1048598, 1572897, 2097196, 3145794, 4718691, 6291588, 9437382, 18874764]

約数ペア:

[(1, 18874764), (2, 9437382), (3, 6291588), (4, 4718691), (6, 3145794), (9, 2097196), (12, 1572897), (18, 1048598), (36, 524299), (43, 438948), (86, 219474), (89, 212076), (129, 146316), (137, 137772), (172, 109737), (178, 106038), (258, 73158), (267, 70692), (274, 68886), (356, 53019), (387, 48772), (411, 45924), (516, 36579), (534, 35346), (548, 34443), (774, 24386), (801, 23564), (822, 22962), (1068, 17673), (1233, 15308), (1548, 12193), (1602, 11782), (1644, 11481), (2466, 7654), (3204, 5891), (3827, 4932)]