21255870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 33176130

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 89, 95, 114, 178, 190, 267, 285, 419, 445, 534, 570, 838, 890, 1257, 1335, 1691, 2095, 2514, 2670, 3382, 4190, 5073, 6285, 7961, 8455, 10146, 12570, 15922, 16910, 23883, 25365, 37291, 39805, 47766, 50730, 74582, 79610, 111873, 119415, 186455, 223746, 238830, 372910, 559365, 708529, 1118730, 1417058, 2125587, 3542645, 4251174, 7085290, 10627935, 21255870]

約数ペア:

[(1, 21255870), (2, 10627935), (3, 7085290), (5, 4251174), (6, 3542645), (10, 2125587), (15, 1417058), (19, 1118730), (30, 708529), (38, 559365), (57, 372910), (89, 238830), (95, 223746), (114, 186455), (178, 119415), (190, 111873), (267, 79610), (285, 74582), (419, 50730), (445, 47766), (534, 39805), (570, 37291), (838, 25365), (890, 23883), (1257, 16910), (1335, 15922), (1691, 12570), (2095, 10146), (2514, 8455), (2670, 7961), (3382, 6285), (4190, 5073)]