21218340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2473}}^1$

素因数の和:2509

約数の個数: 96

約数和(自身を含む): 69826176

約数和(自身を除く): 48607836

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 195, 220, 260, 286, 330, 390, 429, 572, 660, 715, 780, 858, 1430, 1716, 2145, 2473, 2860, 4290, 4946, 7419, 8580, 9892, 12365, 14838, 24730, 27203, 29676, 32149, 37095, 49460, 54406, 64298, 74190, 81609, 96447, 108812, 128596, 136015, 148380, 160745, 163218, 192894, 272030, 321490, 326436, 353639, 385788, 408045, 482235, 544060, 642980, 707278, 816090, 964470, 1060917, 1414556, 1632180, 1768195, 1928940, 2121834, 3536390, 4243668, 5304585, 7072780, 10609170, 21218340]

約数ペア:

[(1, 21218340), (2, 10609170), (3, 7072780), (4, 5304585), (5, 4243668), (6, 3536390), (10, 2121834), (11, 1928940), (12, 1768195), (13, 1632180), (15, 1414556), (20, 1060917), (22, 964470), (26, 816090), (30, 707278), (33, 642980), (39, 544060), (44, 482235), (52, 408045), (55, 385788), (60, 353639), (65, 326436), (66, 321490), (78, 272030), (110, 192894), (130, 163218), (132, 160745), (143, 148380), (156, 136015), (165, 128596), (195, 108812), (220, 96447), (260, 81609), (286, 74190), (330, 64298), (390, 54406), (429, 49460), (572, 37095), (660, 32149), (715, 29676), (780, 27203), (858, 24730), (1430, 14838), (1716, 12365), (2145, 9892), (2473, 8580), (2860, 7419), (4290, 4946)]