42005000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 101967360

約数和(自身を除く): 59962360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 271, 310, 500, 542, 620, 625, 775, 1000, 1084, 1240, 1250, 1355, 1550, 2168, 2500, 2710, 3100, 3875, 5000, 5420, 6200, 6775, 7750, 8401, 10840, 13550, 15500, 16802, 19375, 27100, 31000, 33604, 33875, 38750, 42005, 54200, 67208, 67750, 77500, 84010, 135500, 155000, 168020, 169375, 210025, 271000, 336040, 338750, 420050, 677500, 840100, 1050125, 1355000, 1680200, 2100250, 4200500, 5250625, 8401000, 10501250, 21002500, 42005000]

約数ペア:

[(1, 42005000), (2, 21002500), (4, 10501250), (5, 8401000), (8, 5250625), (10, 4200500), (20, 2100250), (25, 1680200), (31, 1355000), (40, 1050125), (50, 840100), (62, 677500), (100, 420050), (124, 338750), (125, 336040), (155, 271000), (200, 210025), (248, 169375), (250, 168020), (271, 155000), (310, 135500), (500, 84010), (542, 77500), (620, 67750), (625, 67208), (775, 54200), (1000, 42005), (1084, 38750), (1240, 33875), (1250, 33604), (1355, 31000), (1550, 27100), (2168, 19375), (2500, 16802), (2710, 15500), (3100, 13550), (3875, 10840), (5000, 8401), (5420, 7750), (6200, 6775)]