21456516

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 55702080

約数和(自身を除く): 34245564

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 34, 46, 51, 68, 69, 92, 102, 138, 204, 269, 276, 289, 391, 538, 578, 782, 807, 867, 1076, 1156, 1173, 1564, 1614, 1734, 2346, 3228, 3468, 4573, 4692, 6187, 6647, 9146, 12374, 13294, 13719, 18292, 18561, 19941, 24748, 26588, 27438, 37122, 39882, 54876, 74244, 77741, 79764, 105179, 155482, 210358, 233223, 310964, 315537, 420716, 466446, 631074, 932892, 1262148, 1788043, 3576086, 5364129, 7152172, 10728258, 21456516]

約数ペア:

[(1, 21456516), (2, 10728258), (3, 7152172), (4, 5364129), (6, 3576086), (12, 1788043), (17, 1262148), (23, 932892), (34, 631074), (46, 466446), (51, 420716), (68, 315537), (69, 310964), (92, 233223), (102, 210358), (138, 155482), (204, 105179), (269, 79764), (276, 77741), (289, 74244), (391, 54876), (538, 39882), (578, 37122), (782, 27438), (807, 26588), (867, 24748), (1076, 19941), (1156, 18561), (1173, 18292), (1564, 13719), (1614, 13294), (1734, 12374), (2346, 9146), (3228, 6647), (3468, 6187), (4573, 4692)]