215955920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{53}}^2$

素因数の和:181

約数の個数: 90

約数和(自身を含む): 528790374

約数和(自身を除く): 312834454

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 53, 62, 80, 106, 124, 155, 212, 248, 265, 310, 424, 496, 530, 620, 848, 961, 1060, 1240, 1643, 1922, 2120, 2480, 2809, 3286, 3844, 4240, 4805, 5618, 6572, 7688, 8215, 9610, 11236, 13144, 14045, 15376, 16430, 19220, 22472, 26288, 28090, 32860, 38440, 44944, 50933, 56180, 65720, 76880, 87079, 101866, 112360, 131440, 174158, 203732, 224720, 254665, 348316, 407464, 435395, 509330, 696632, 814928, 870790, 1018660, 1393264, 1741580, 2037320, 2699449, 3483160, 4074640, 5398898, 6966320, 10797796, 13497245, 21595592, 26994490, 43191184, 53988980, 107977960, 215955920]

約数ペア:

[(1, 215955920), (2, 107977960), (4, 53988980), (5, 43191184), (8, 26994490), (10, 21595592), (16, 13497245), (20, 10797796), (31, 6966320), (40, 5398898), (53, 4074640), (62, 3483160), (80, 2699449), (106, 2037320), (124, 1741580), (155, 1393264), (212, 1018660), (248, 870790), (265, 814928), (310, 696632), (424, 509330), (496, 435395), (530, 407464), (620, 348316), (848, 254665), (961, 224720), (1060, 203732), (1240, 174158), (1643, 131440), (1922, 112360), (2120, 101866), (2480, 87079), (2809, 76880), (3286, 65720), (3844, 56180), (4240, 50933), (4805, 44944), (5618, 38440), (6572, 32860), (7688, 28090), (8215, 26288), (9610, 22472), (11236, 19220), (13144, 16430), (14045, 15376)]