261604980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15971}}^1$

素因数の和:16006

約数の個数: 144

約数和(自身を含む): 976719744

約数和(自身を除く): 715114764

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 15971, 16380, 31942, 47913, 63884, 79855, 95826, 111797, 143739, 159710, 191652, 207623, 223594, 239565, 287478, 319420, 335391, 415246, 447188, 479130, 558985, 574956, 622869, 670782, 718695, 830492, 958260, 1006173, 1038115, 1117970, 1245738, 1341564, 1437390, 1453361, 1676955, 1868607, 2012346, 2076230, 2235940, 2491476, 2874780, 2906722, 3114345, 3353910, 3737214, 4024692, 4152460, 4360083, 5030865, 5813444, 6228690, 6707820, 7266805, 7474428, 8720166, 9343035, 10061730, 12457380, 13080249, 14533610, 17440332, 18686070, 20123460, 21800415, 26160498, 29067220, 37372140, 43600830, 52320996, 65401245, 87201660, 130802490, 261604980]

約数ペア:

[(1, 261604980), (2, 130802490), (3, 87201660), (4, 65401245), (5, 52320996), (6, 43600830), (7, 37372140), (9, 29067220), (10, 26160498), (12, 21800415), (13, 20123460), (14, 18686070), (15, 17440332), (18, 14533610), (20, 13080249), (21, 12457380), (26, 10061730), (28, 9343035), (30, 8720166), (35, 7474428), (36, 7266805), (39, 6707820), (42, 6228690), (45, 5813444), (52, 5030865), (60, 4360083), (63, 4152460), (65, 4024692), (70, 3737214), (78, 3353910), (84, 3114345), (90, 2906722), (91, 2874780), (105, 2491476), (117, 2235940), (126, 2076230), (130, 2012346), (140, 1868607), (156, 1676955), (180, 1453361), (182, 1437390), (195, 1341564), (210, 1245738), (234, 1117970), (252, 1038115), (260, 1006173), (273, 958260), (315, 830492), (364, 718695), (390, 670782), (420, 622869), (455, 574956), (468, 558985), (546, 479130), (585, 447188), (630, 415246), (780, 335391), (819, 319420), (910, 287478), (1092, 239565), (1170, 223594), (1260, 207623), (1365, 191652), (1638, 159710), (1820, 143739), (2340, 111797), (2730, 95826), (3276, 79855), (4095, 63884), (5460, 47913), (8190, 31942), (15971, 16380)]