278778825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{499}}^1$

素因数の和:719

約数の個数: 72

約数和(自身を含む): 541632000

約数和(自身を除く): 262853175

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 191, 195, 225, 325, 499, 573, 585, 955, 975, 1497, 1719, 2483, 2495, 2865, 2925, 4491, 4775, 6487, 7449, 7485, 8595, 12415, 12475, 14325, 19461, 22347, 22455, 32435, 37245, 37425, 42975, 58383, 62075, 95309, 97305, 111735, 112275, 162175, 186225, 285927, 291915, 476545, 486525, 558675, 857781, 1239017, 1429635, 1459575, 2382725, 3717051, 4288905, 6195085, 7148175, 11151153, 18585255, 21444525, 30975425, 55755765, 92926275, 278778825]

約数ペア:

[(1, 278778825), (3, 92926275), (5, 55755765), (9, 30975425), (13, 21444525), (15, 18585255), (25, 11151153), (39, 7148175), (45, 6195085), (65, 4288905), (75, 3717051), (117, 2382725), (191, 1459575), (195, 1429635), (225, 1239017), (325, 857781), (499, 558675), (573, 486525), (585, 476545), (955, 291915), (975, 285927), (1497, 186225), (1719, 162175), (2483, 112275), (2495, 111735), (2865, 97305), (2925, 95309), (4491, 62075), (4775, 58383), (6487, 42975), (7449, 37425), (7485, 37245), (8595, 32435), (12415, 22455), (12475, 22347), (14325, 19461)]