402407900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{479}}^1$

素因数の和:795

約数の個数: 72

約数和(自身を含む): 906608640

約数和(自身を除く): 504200740

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 271, 310, 479, 542, 620, 775, 958, 1084, 1355, 1550, 1916, 2395, 2710, 3100, 4790, 5420, 6775, 8401, 9580, 11975, 13550, 14849, 16802, 23950, 27100, 29698, 33604, 42005, 47900, 59396, 74245, 84010, 129809, 148490, 168020, 210025, 259618, 296980, 371225, 420050, 519236, 649045, 742450, 840100, 1298090, 1484900, 2596180, 3245225, 4024079, 6490450, 8048158, 12980900, 16096316, 20120395, 40240790, 80481580, 100601975, 201203950, 402407900]

約数ペア:

[(1, 402407900), (2, 201203950), (4, 100601975), (5, 80481580), (10, 40240790), (20, 20120395), (25, 16096316), (31, 12980900), (50, 8048158), (62, 6490450), (100, 4024079), (124, 3245225), (155, 2596180), (271, 1484900), (310, 1298090), (479, 840100), (542, 742450), (620, 649045), (775, 519236), (958, 420050), (1084, 371225), (1355, 296980), (1550, 259618), (1916, 210025), (2395, 168020), (2710, 148490), (3100, 129809), (4790, 84010), (5420, 74245), (6775, 59396), (8401, 47900), (9580, 42005), (11975, 33604), (13550, 29698), (14849, 27100), (16802, 23950)]