21855900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 71245440

約数和(自身を除く): 49389540

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 25, 30, 33, 37, 44, 50, 55, 60, 66, 74, 75, 100, 110, 111, 132, 148, 150, 165, 179, 185, 220, 222, 275, 300, 330, 358, 370, 407, 444, 537, 550, 555, 660, 716, 740, 814, 825, 895, 925, 1074, 1100, 1110, 1221, 1628, 1650, 1790, 1850, 1969, 2035, 2148, 2220, 2442, 2685, 2775, 3300, 3580, 3700, 3938, 4070, 4475, 4884, 5370, 5550, 5907, 6105, 6623, 7876, 8140, 8950, 9845, 10175, 10740, 11100, 11814, 12210, 13246, 13425, 17900, 19690, 19869, 20350, 23628, 24420, 26492, 26850, 29535, 30525, 33115, 39380, 39738, 40700, 49225, 53700, 59070, 61050, 66230, 72853, 79476, 98450, 99345, 118140, 122100, 132460, 145706, 147675, 165575, 196900, 198690, 218559, 291412, 295350, 331150, 364265, 397380, 437118, 496725, 590700, 662300, 728530, 874236, 993450, 1092795, 1457060, 1821325, 1986900, 2185590, 3642650, 4371180, 5463975, 7285300, 10927950, 21855900]

約数ペア:

[(1, 21855900), (2, 10927950), (3, 7285300), (4, 5463975), (5, 4371180), (6, 3642650), (10, 2185590), (11, 1986900), (12, 1821325), (15, 1457060), (20, 1092795), (22, 993450), (25, 874236), (30, 728530), (33, 662300), (37, 590700), (44, 496725), (50, 437118), (55, 397380), (60, 364265), (66, 331150), (74, 295350), (75, 291412), (100, 218559), (110, 198690), (111, 196900), (132, 165575), (148, 147675), (150, 145706), (165, 132460), (179, 122100), (185, 118140), (220, 99345), (222, 98450), (275, 79476), (300, 72853), (330, 66230), (358, 61050), (370, 59070), (407, 53700), (444, 49225), (537, 40700), (550, 39738), (555, 39380), (660, 33115), (716, 30525), (740, 29535), (814, 26850), (825, 26492), (895, 24420), (925, 23628), (1074, 20350), (1100, 19869), (1110, 19690), (1221, 17900), (1628, 13425), (1650, 13246), (1790, 12210), (1850, 11814), (1969, 11100), (2035, 10740), (2148, 10175), (2220, 9845), (2442, 8950), (2685, 8140), (2775, 7876), (3300, 6623), (3580, 6105), (3700, 5907), (3938, 5550), (4070, 5370), (4475, 4884)]