28778925

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 56996352

約数和(自身を除く): 28217427

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 49, 75, 105, 123, 147, 175, 191, 205, 245, 287, 525, 573, 615, 735, 861, 955, 1025, 1225, 1337, 1435, 2009, 2865, 3075, 3675, 4011, 4305, 4775, 6027, 6685, 7175, 7831, 9359, 10045, 14325, 20055, 21525, 23493, 28077, 30135, 33425, 39155, 46795, 50225, 54817, 100275, 117465, 140385, 150675, 164451, 195775, 233975, 274085, 383719, 587325, 701925, 822255, 1151157, 1370425, 1918595, 4111275, 5755785, 9592975, 28778925]

約数ペア:

[(1, 28778925), (3, 9592975), (5, 5755785), (7, 4111275), (15, 1918595), (21, 1370425), (25, 1151157), (35, 822255), (41, 701925), (49, 587325), (75, 383719), (105, 274085), (123, 233975), (147, 195775), (175, 164451), (191, 150675), (205, 140385), (245, 117465), (287, 100275), (525, 54817), (573, 50225), (615, 46795), (735, 39155), (861, 33425), (955, 30135), (1025, 28077), (1225, 23493), (1337, 21525), (1435, 20055), (2009, 14325), (2865, 10045), (3075, 9359), (3675, 7831), (4011, 7175), (4305, 6685), (4775, 6027)]