261607140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:490

約数の個数: 144

約数和(自身を含む): 826914816

約数和(自身を除く): 565307676

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 173, 180, 186, 271, 279, 310, 346, 372, 465, 519, 542, 558, 620, 692, 813, 865, 930, 1038, 1084, 1116, 1355, 1395, 1557, 1626, 1730, 1860, 2076, 2439, 2595, 2710, 2790, 3114, 3252, 3460, 4065, 4878, 5190, 5363, 5420, 5580, 6228, 7785, 8130, 8401, 9756, 10380, 10726, 12195, 15570, 16089, 16260, 16802, 21452, 24390, 25203, 26815, 31140, 32178, 33604, 42005, 46883, 48267, 48780, 50406, 53630, 64356, 75609, 80445, 84010, 93766, 96534, 100812, 107260, 126015, 140649, 151218, 160890, 168020, 187532, 193068, 234415, 241335, 252030, 281298, 302436, 321780, 378045, 421947, 468830, 482670, 504060, 562596, 703245, 756090, 843894, 937660, 965340, 1406490, 1453373, 1512180, 1687788, 2109735, 2812980, 2906746, 4219470, 4360119, 5813492, 7266865, 8438940, 8720238, 13080357, 14533730, 17440476, 21800595, 26160714, 29067460, 43601190, 52321428, 65401785, 87202380, 130803570, 261607140]

約数ペア:

[(1, 261607140), (2, 130803570), (3, 87202380), (4, 65401785), (5, 52321428), (6, 43601190), (9, 29067460), (10, 26160714), (12, 21800595), (15, 17440476), (18, 14533730), (20, 13080357), (30, 8720238), (31, 8438940), (36, 7266865), (45, 5813492), (60, 4360119), (62, 4219470), (90, 2906746), (93, 2812980), (124, 2109735), (155, 1687788), (173, 1512180), (180, 1453373), (186, 1406490), (271, 965340), (279, 937660), (310, 843894), (346, 756090), (372, 703245), (465, 562596), (519, 504060), (542, 482670), (558, 468830), (620, 421947), (692, 378045), (813, 321780), (865, 302436), (930, 281298), (1038, 252030), (1084, 241335), (1116, 234415), (1355, 193068), (1395, 187532), (1557, 168020), (1626, 160890), (1730, 151218), (1860, 140649), (2076, 126015), (2439, 107260), (2595, 100812), (2710, 96534), (2790, 93766), (3114, 84010), (3252, 80445), (3460, 75609), (4065, 64356), (4878, 53630), (5190, 50406), (5363, 48780), (5420, 48267), (5580, 46883), (6228, 42005), (7785, 33604), (8130, 32178), (8401, 31140), (9756, 26815), (10380, 25203), (10726, 24390), (12195, 21452), (15570, 16802), (16089, 16260)]