287431390

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{2113}}^1$

素因数の和:2404

約数の個数: 32

約数和(自身を含む): 528466176

約数和(自身を除く): 241034786

約数列:

[1, 2, 5, 10, 61, 122, 223, 305, 446, 610, 1115, 2113, 2230, 4226, 10565, 13603, 21130, 27206, 68015, 128893, 136030, 257786, 471199, 644465, 942398, 1288930, 2355995, 4711990, 28743139, 57486278, 143715695, 287431390]

約数ペア:

[(1, 287431390), (2, 143715695), (5, 57486278), (10, 28743139), (61, 4711990), (122, 2355995), (223, 1288930), (305, 942398), (446, 644465), (610, 471199), (1115, 257786), (2113, 136030), (2230, 128893), (4226, 68015), (10565, 27206), (13603, 21130)]