20214180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:346

約数の個数: 144

約数和(自身を含む): 71495424

約数和(自身を除く): 51281244

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 263, 305, 315, 366, 420, 427, 526, 549, 610, 630, 732, 789, 854, 915, 1052, 1098, 1220, 1260, 1281, 1315, 1578, 1708, 1830, 1841, 2135, 2196, 2367, 2562, 2630, 2745, 3156, 3660, 3682, 3843, 3945, 4270, 4734, 5124, 5260, 5490, 5523, 6405, 7364, 7686, 7890, 8540, 9205, 9468, 10980, 11046, 11835, 12810, 15372, 15780, 16043, 16569, 18410, 19215, 22092, 23670, 25620, 27615, 32086, 33138, 36820, 38430, 47340, 48129, 55230, 64172, 66276, 76860, 80215, 82845, 96258, 110460, 112301, 144387, 160430, 165690, 192516, 224602, 240645, 288774, 320860, 331380, 336903, 449204, 481290, 561505, 577548, 673806, 721935, 962580, 1010709, 1123010, 1347612, 1443870, 1684515, 2021418, 2246020, 2887740, 3369030, 4042836, 5053545, 6738060, 10107090, 20214180]

約数ペア:

[(1, 20214180), (2, 10107090), (3, 6738060), (4, 5053545), (5, 4042836), (6, 3369030), (7, 2887740), (9, 2246020), (10, 2021418), (12, 1684515), (14, 1443870), (15, 1347612), (18, 1123010), (20, 1010709), (21, 962580), (28, 721935), (30, 673806), (35, 577548), (36, 561505), (42, 481290), (45, 449204), (60, 336903), (61, 331380), (63, 320860), (70, 288774), (84, 240645), (90, 224602), (105, 192516), (122, 165690), (126, 160430), (140, 144387), (180, 112301), (183, 110460), (210, 96258), (244, 82845), (252, 80215), (263, 76860), (305, 66276), (315, 64172), (366, 55230), (420, 48129), (427, 47340), (526, 38430), (549, 36820), (610, 33138), (630, 32086), (732, 27615), (789, 25620), (854, 23670), (915, 22092), (1052, 19215), (1098, 18410), (1220, 16569), (1260, 16043), (1281, 15780), (1315, 15372), (1578, 12810), (1708, 11835), (1830, 11046), (1841, 10980), (2135, 9468), (2196, 9205), (2367, 8540), (2562, 7890), (2630, 7686), (2745, 7364), (3156, 6405), (3660, 5523), (3682, 5490), (3843, 5260), (3945, 5124), (4270, 4734)]