18921240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{311}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 66802320

約数和(自身を除く): 47881080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 311, 312, 338, 360, 390, 468, 507, 520, 585, 622, 676, 780, 845, 933, 936, 1014, 1170, 1244, 1352, 1521, 1555, 1560, 1690, 1866, 2028, 2340, 2488, 2535, 2799, 3042, 3110, 3380, 3732, 4043, 4056, 4665, 4680, 5070, 5598, 6084, 6220, 6760, 7464, 7605, 8086, 9330, 10140, 11196, 12129, 12168, 12440, 13995, 15210, 16172, 18660, 20215, 20280, 22392, 24258, 27990, 30420, 32344, 36387, 37320, 40430, 48516, 52559, 55980, 60645, 60840, 72774, 80860, 97032, 105118, 111960, 121290, 145548, 157677, 161720, 181935, 210236, 242580, 262795, 291096, 315354, 363870, 420472, 473031, 485160, 525590, 630708, 727740, 788385, 946062, 1051180, 1261416, 1455480, 1576770, 1892124, 2102360, 2365155, 3153540, 3784248, 4730310, 6307080, 9460620, 18921240]

約数ペア:

[(1, 18921240), (2, 9460620), (3, 6307080), (4, 4730310), (5, 3784248), (6, 3153540), (8, 2365155), (9, 2102360), (10, 1892124), (12, 1576770), (13, 1455480), (15, 1261416), (18, 1051180), (20, 946062), (24, 788385), (26, 727740), (30, 630708), (36, 525590), (39, 485160), (40, 473031), (45, 420472), (52, 363870), (60, 315354), (65, 291096), (72, 262795), (78, 242580), (90, 210236), (104, 181935), (117, 161720), (120, 157677), (130, 145548), (156, 121290), (169, 111960), (180, 105118), (195, 97032), (234, 80860), (260, 72774), (311, 60840), (312, 60645), (338, 55980), (360, 52559), (390, 48516), (468, 40430), (507, 37320), (520, 36387), (585, 32344), (622, 30420), (676, 27990), (780, 24258), (845, 22392), (933, 20280), (936, 20215), (1014, 18660), (1170, 16172), (1244, 15210), (1352, 13995), (1521, 12440), (1555, 12168), (1560, 12129), (1690, 11196), (1866, 10140), (2028, 9330), (2340, 8086), (2488, 7605), (2535, 7464), (2799, 6760), (3042, 6220), (3110, 6084), (3380, 5598), (3732, 5070), (4043, 4680), (4056, 4665)]