257816988

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:916

約数の個数: 144

約数和(自身を含む): 779137632

約数和(自身を除く): 521320644

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 61, 66, 78, 99, 117, 122, 132, 143, 156, 183, 198, 234, 244, 286, 366, 396, 429, 468, 549, 572, 671, 732, 793, 821, 858, 1098, 1287, 1342, 1586, 1642, 1716, 2013, 2196, 2379, 2463, 2574, 2684, 3172, 3284, 4026, 4758, 4926, 5148, 6039, 7137, 7389, 8052, 8723, 9031, 9516, 9852, 10673, 12078, 14274, 14778, 17446, 18062, 21346, 24156, 26169, 27093, 28548, 29556, 32019, 34892, 36124, 42692, 50081, 52338, 54186, 64038, 78507, 81279, 96057, 100162, 104676, 108372, 117403, 128076, 150243, 157014, 162558, 192114, 200324, 234806, 300486, 314028, 325116, 352209, 384228, 450729, 469612, 550891, 600972, 651053, 704418, 901458, 1056627, 1101782, 1302106, 1408836, 1652673, 1802916, 1953159, 2113254, 2203564, 2604212, 3305346, 3906318, 4226508, 4958019, 5859477, 6610692, 7161583, 7812636, 9916038, 11718954, 14323166, 19832076, 21484749, 23437908, 28646332, 42969498, 64454247, 85938996, 128908494, 257816988]

約数ペア:

[(1, 257816988), (2, 128908494), (3, 85938996), (4, 64454247), (6, 42969498), (9, 28646332), (11, 23437908), (12, 21484749), (13, 19832076), (18, 14323166), (22, 11718954), (26, 9916038), (33, 7812636), (36, 7161583), (39, 6610692), (44, 5859477), (52, 4958019), (61, 4226508), (66, 3906318), (78, 3305346), (99, 2604212), (117, 2203564), (122, 2113254), (132, 1953159), (143, 1802916), (156, 1652673), (183, 1408836), (198, 1302106), (234, 1101782), (244, 1056627), (286, 901458), (366, 704418), (396, 651053), (429, 600972), (468, 550891), (549, 469612), (572, 450729), (671, 384228), (732, 352209), (793, 325116), (821, 314028), (858, 300486), (1098, 234806), (1287, 200324), (1342, 192114), (1586, 162558), (1642, 157014), (1716, 150243), (2013, 128076), (2196, 117403), (2379, 108372), (2463, 104676), (2574, 100162), (2684, 96057), (3172, 81279), (3284, 78507), (4026, 64038), (4758, 54186), (4926, 52338), (5148, 50081), (6039, 42692), (7137, 36124), (7389, 34892), (8052, 32019), (8723, 29556), (9031, 28548), (9516, 27093), (9852, 26169), (10673, 24156), (12078, 21346), (14274, 18062), (14778, 17446)]