42000400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 120

約数和(自身を含む): 111883464

約数和(自身を除く): 69883064

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 41, 50, 52, 65, 80, 82, 100, 104, 130, 164, 197, 200, 205, 208, 260, 325, 328, 394, 400, 410, 520, 533, 650, 656, 788, 820, 985, 1025, 1040, 1066, 1300, 1576, 1640, 1970, 2050, 2132, 2561, 2600, 2665, 3152, 3280, 3940, 4100, 4264, 4925, 5122, 5200, 5330, 7880, 8077, 8200, 8528, 9850, 10244, 10660, 12805, 13325, 15760, 16154, 16400, 19700, 20488, 21320, 25610, 26650, 32308, 39400, 40385, 40976, 42640, 51220, 53300, 64025, 64616, 78800, 80770, 102440, 105001, 106600, 128050, 129232, 161540, 201925, 204880, 210002, 213200, 256100, 323080, 403850, 420004, 512200, 525005, 646160, 807700, 840008, 1024400, 1050010, 1615400, 1680016, 2100020, 2625025, 3230800, 4200040, 5250050, 8400080, 10500100, 21000200, 42000400]

約数ペア:

[(1, 42000400), (2, 21000200), (4, 10500100), (5, 8400080), (8, 5250050), (10, 4200040), (13, 3230800), (16, 2625025), (20, 2100020), (25, 1680016), (26, 1615400), (40, 1050010), (41, 1024400), (50, 840008), (52, 807700), (65, 646160), (80, 525005), (82, 512200), (100, 420004), (104, 403850), (130, 323080), (164, 256100), (197, 213200), (200, 210002), (205, 204880), (208, 201925), (260, 161540), (325, 129232), (328, 128050), (394, 106600), (400, 105001), (410, 102440), (520, 80770), (533, 78800), (650, 64616), (656, 64025), (788, 53300), (820, 51220), (985, 42640), (1025, 40976), (1040, 40385), (1066, 39400), (1300, 32308), (1576, 26650), (1640, 25610), (1970, 21320), (2050, 20488), (2132, 19700), (2561, 16400), (2600, 16154), (2665, 15760), (3152, 13325), (3280, 12805), (3940, 10660), (4100, 10244), (4264, 9850), (4925, 8528), (5122, 8200), (5200, 8077), (5330, 7880)]