21247400

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 53568000

約数和(自身を除く): 32320600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 31, 40, 46, 50, 62, 92, 100, 115, 124, 149, 155, 184, 200, 230, 248, 298, 310, 460, 575, 596, 620, 713, 745, 775, 920, 1150, 1192, 1240, 1426, 1490, 1550, 2300, 2852, 2980, 3100, 3427, 3565, 3725, 4600, 4619, 5704, 5960, 6200, 6854, 7130, 7450, 9238, 13708, 14260, 14900, 17135, 17825, 18476, 23095, 27416, 28520, 29800, 34270, 35650, 36952, 46190, 68540, 71300, 85675, 92380, 106237, 115475, 137080, 142600, 171350, 184760, 212474, 230950, 342700, 424948, 461900, 531185, 685400, 849896, 923800, 1062370, 2124740, 2655925, 4249480, 5311850, 10623700, 21247400]

約数ペア:

[(1, 21247400), (2, 10623700), (4, 5311850), (5, 4249480), (8, 2655925), (10, 2124740), (20, 1062370), (23, 923800), (25, 849896), (31, 685400), (40, 531185), (46, 461900), (50, 424948), (62, 342700), (92, 230950), (100, 212474), (115, 184760), (124, 171350), (149, 142600), (155, 137080), (184, 115475), (200, 106237), (230, 92380), (248, 85675), (298, 71300), (310, 68540), (460, 46190), (575, 36952), (596, 35650), (620, 34270), (713, 29800), (745, 28520), (775, 27416), (920, 23095), (1150, 18476), (1192, 17825), (1240, 17135), (1426, 14900), (1490, 14260), (1550, 13708), (2300, 9238), (2852, 7450), (2980, 7130), (3100, 6854), (3427, 6200), (3565, 5960), (3725, 5704), (4600, 4619)]