28196805

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{227}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 57078432

約数和(自身を除く): 28881627

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 169, 195, 227, 245, 273, 455, 507, 637, 681, 735, 845, 1135, 1183, 1365, 1589, 1911, 2535, 2951, 3185, 3405, 3549, 4767, 5915, 7945, 8281, 8853, 9555, 11123, 14755, 17745, 20657, 23835, 24843, 33369, 38363, 41405, 44265, 55615, 61971, 103285, 115089, 124215, 144599, 166845, 191815, 268541, 309855, 433797, 575445, 722995, 805623, 1342705, 1879787, 2168985, 4028115, 5639361, 9398935, 28196805]

約数ペア:

[(1, 28196805), (3, 9398935), (5, 5639361), (7, 4028115), (13, 2168985), (15, 1879787), (21, 1342705), (35, 805623), (39, 722995), (49, 575445), (65, 433797), (91, 309855), (105, 268541), (147, 191815), (169, 166845), (195, 144599), (227, 124215), (245, 115089), (273, 103285), (455, 61971), (507, 55615), (637, 44265), (681, 41405), (735, 38363), (845, 33369), (1135, 24843), (1183, 23835), (1365, 20657), (1589, 17745), (1911, 14755), (2535, 11123), (2951, 9555), (3185, 8853), (3405, 8281), (3549, 7945), (4767, 5915)]