18973240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 33281480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 31, 40, 44, 52, 55, 62, 65, 88, 104, 107, 110, 124, 130, 143, 155, 214, 220, 248, 260, 286, 310, 341, 403, 428, 440, 520, 535, 572, 620, 682, 715, 806, 856, 1070, 1144, 1177, 1240, 1364, 1391, 1430, 1612, 1705, 2015, 2140, 2354, 2728, 2782, 2860, 3224, 3317, 3410, 4030, 4280, 4433, 4708, 5564, 5720, 5885, 6634, 6820, 6955, 8060, 8866, 9416, 11128, 11770, 13268, 13640, 13910, 15301, 16120, 16585, 17732, 22165, 23540, 26536, 27820, 30602, 33170, 35464, 36487, 43121, 44330, 47080, 55640, 61204, 66340, 72974, 76505, 86242, 88660, 122408, 132680, 145948, 153010, 172484, 177320, 182435, 215605, 291896, 306020, 344968, 364870, 431210, 474331, 612040, 729740, 862420, 948662, 1459480, 1724840, 1897324, 2371655, 3794648, 4743310, 9486620, 18973240]

約数ペア:

[(1, 18973240), (2, 9486620), (4, 4743310), (5, 3794648), (8, 2371655), (10, 1897324), (11, 1724840), (13, 1459480), (20, 948662), (22, 862420), (26, 729740), (31, 612040), (40, 474331), (44, 431210), (52, 364870), (55, 344968), (62, 306020), (65, 291896), (88, 215605), (104, 182435), (107, 177320), (110, 172484), (124, 153010), (130, 145948), (143, 132680), (155, 122408), (214, 88660), (220, 86242), (248, 76505), (260, 72974), (286, 66340), (310, 61204), (341, 55640), (403, 47080), (428, 44330), (440, 43121), (520, 36487), (535, 35464), (572, 33170), (620, 30602), (682, 27820), (715, 26536), (806, 23540), (856, 22165), (1070, 17732), (1144, 16585), (1177, 16120), (1240, 15301), (1364, 13910), (1391, 13640), (1430, 13268), (1612, 11770), (1705, 11128), (2015, 9416), (2140, 8866), (2354, 8060), (2728, 6955), (2782, 6820), (2860, 6634), (3224, 5885), (3317, 5720), (3410, 5564), (4030, 4708), (4280, 4433)]