28895980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 62868960

約数和(自身を除く): 33972980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 131, 164, 205, 262, 269, 410, 524, 538, 655, 820, 1076, 1310, 1345, 2620, 2690, 5371, 5380, 10742, 11029, 21484, 22058, 26855, 35239, 44116, 53710, 55145, 70478, 107420, 110290, 140956, 176195, 220580, 352390, 704780, 1444799, 2889598, 5779196, 7223995, 14447990, 28895980]

約数ペア:

[(1, 28895980), (2, 14447990), (4, 7223995), (5, 5779196), (10, 2889598), (20, 1444799), (41, 704780), (82, 352390), (131, 220580), (164, 176195), (205, 140956), (262, 110290), (269, 107420), (410, 70478), (524, 55145), (538, 53710), (655, 44116), (820, 35239), (1076, 26855), (1310, 22058), (1345, 21484), (2620, 11029), (2690, 10742), (5371, 5380)]