257107578

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:348

約数の個数: 128

約数和(自身を含む): 664215552

約数和(自身を除く): 407107974

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 43, 47, 78, 86, 91, 94, 129, 141, 182, 233, 258, 273, 282, 301, 329, 466, 546, 559, 602, 611, 658, 699, 903, 987, 1118, 1222, 1398, 1631, 1677, 1806, 1833, 1974, 2021, 3029, 3262, 3354, 3666, 3913, 4042, 4277, 4893, 6058, 6063, 7826, 8554, 9087, 9786, 10019, 10951, 11739, 12126, 12831, 14147, 18174, 20038, 21203, 21902, 23478, 25662, 26273, 28294, 30057, 32853, 42406, 42441, 52546, 60114, 63609, 65706, 70133, 76657, 78819, 84882, 127218, 130247, 140266, 142363, 153314, 157638, 183911, 210399, 229971, 260494, 284726, 367822, 390741, 420798, 427089, 459942, 470893, 551733, 781482, 854178, 911729, 941786, 996541, 1103466, 1412679, 1823458, 1993082, 2735187, 2825358, 2989623, 3296251, 5470374, 5979246, 6121609, 6592502, 9888753, 12243218, 18364827, 19777506, 36729654, 42851263, 85702526, 128553789, 257107578]

約数ペア:

[(1, 257107578), (2, 128553789), (3, 85702526), (6, 42851263), (7, 36729654), (13, 19777506), (14, 18364827), (21, 12243218), (26, 9888753), (39, 6592502), (42, 6121609), (43, 5979246), (47, 5470374), (78, 3296251), (86, 2989623), (91, 2825358), (94, 2735187), (129, 1993082), (141, 1823458), (182, 1412679), (233, 1103466), (258, 996541), (273, 941786), (282, 911729), (301, 854178), (329, 781482), (466, 551733), (546, 470893), (559, 459942), (602, 427089), (611, 420798), (658, 390741), (699, 367822), (903, 284726), (987, 260494), (1118, 229971), (1222, 210399), (1398, 183911), (1631, 157638), (1677, 153314), (1806, 142363), (1833, 140266), (1974, 130247), (2021, 127218), (3029, 84882), (3262, 78819), (3354, 76657), (3666, 70133), (3913, 65706), (4042, 63609), (4277, 60114), (4893, 52546), (6058, 42441), (6063, 42406), (7826, 32853), (8554, 30057), (9087, 28294), (9786, 26273), (10019, 25662), (10951, 23478), (11739, 21902), (12126, 21203), (12831, 20038), (14147, 18174)]