256351284

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{23}}^2\times {\mathrm{641}}^1$

素因数の和:707

約数の個数: 144

約数和(自身を含む): 795258240

約数和(自身を除く): 538906956

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 42, 46, 54, 63, 69, 84, 92, 108, 126, 138, 161, 189, 207, 252, 276, 322, 378, 414, 483, 529, 621, 641, 644, 756, 828, 966, 1058, 1242, 1282, 1449, 1587, 1923, 1932, 2116, 2484, 2564, 2898, 3174, 3703, 3846, 4347, 4487, 4761, 5769, 5796, 6348, 7406, 7692, 8694, 8974, 9522, 11109, 11538, 13461, 14283, 14743, 14812, 17307, 17388, 17948, 19044, 22218, 23076, 26922, 28566, 29486, 33327, 34614, 40383, 44229, 44436, 53844, 57132, 58972, 66654, 69228, 80766, 88458, 99981, 103201, 121149, 132687, 133308, 161532, 176916, 199962, 206402, 242298, 265374, 309603, 339089, 398061, 399924, 412804, 484596, 530748, 619206, 678178, 796122, 928809, 1017267, 1238412, 1356356, 1592244, 1857618, 2034534, 2373623, 2786427, 3051801, 3715236, 4069068, 4747246, 5572854, 6103602, 7120869, 9155403, 9494492, 11145708, 12207204, 14241738, 18310806, 21362607, 28483476, 36621612, 42725214, 64087821, 85450428, 128175642, 256351284]

約数ペア:

[(1, 256351284), (2, 128175642), (3, 85450428), (4, 64087821), (6, 42725214), (7, 36621612), (9, 28483476), (12, 21362607), (14, 18310806), (18, 14241738), (21, 12207204), (23, 11145708), (27, 9494492), (28, 9155403), (36, 7120869), (42, 6103602), (46, 5572854), (54, 4747246), (63, 4069068), (69, 3715236), (84, 3051801), (92, 2786427), (108, 2373623), (126, 2034534), (138, 1857618), (161, 1592244), (189, 1356356), (207, 1238412), (252, 1017267), (276, 928809), (322, 796122), (378, 678178), (414, 619206), (483, 530748), (529, 484596), (621, 412804), (641, 399924), (644, 398061), (756, 339089), (828, 309603), (966, 265374), (1058, 242298), (1242, 206402), (1282, 199962), (1449, 176916), (1587, 161532), (1923, 133308), (1932, 132687), (2116, 121149), (2484, 103201), (2564, 99981), (2898, 88458), (3174, 80766), (3703, 69228), (3846, 66654), (4347, 58972), (4487, 57132), (4761, 53844), (5769, 44436), (5796, 44229), (6348, 40383), (7406, 34614), (7692, 33327), (8694, 29486), (8974, 28566), (9522, 26922), (11109, 23076), (11538, 22218), (13461, 19044), (14283, 17948), (14743, 17388), (14812, 17307)]