87214420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 198051840

約数和(自身を除く): 110837420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 191, 289, 316, 340, 382, 395, 578, 764, 790, 955, 1156, 1343, 1445, 1580, 1910, 2686, 2890, 3247, 3820, 5372, 5780, 6494, 6715, 12988, 13430, 15089, 16235, 22831, 26860, 30178, 32470, 45662, 55199, 60356, 64940, 75445, 91324, 110398, 114155, 150890, 220796, 228310, 256513, 275995, 301780, 456620, 513026, 551990, 1026052, 1103980, 1282565, 2565130, 4360721, 5130260, 8721442, 17442884, 21803605, 43607210, 87214420]

約数ペア:

[(1, 87214420), (2, 43607210), (4, 21803605), (5, 17442884), (10, 8721442), (17, 5130260), (20, 4360721), (34, 2565130), (68, 1282565), (79, 1103980), (85, 1026052), (158, 551990), (170, 513026), (191, 456620), (289, 301780), (316, 275995), (340, 256513), (382, 228310), (395, 220796), (578, 150890), (764, 114155), (790, 110398), (955, 91324), (1156, 75445), (1343, 64940), (1445, 60356), (1580, 55199), (1910, 45662), (2686, 32470), (2890, 30178), (3247, 26860), (3820, 22831), (5372, 16235), (5780, 15089), (6494, 13430), (6715, 12988)]