30978920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 85155840

約数和(自身を除く): 54176920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 43, 56, 62, 70, 83, 86, 124, 140, 155, 166, 172, 215, 217, 248, 280, 301, 310, 332, 344, 415, 430, 434, 581, 602, 620, 664, 830, 860, 868, 1085, 1162, 1204, 1240, 1333, 1505, 1660, 1720, 1736, 2170, 2324, 2408, 2573, 2666, 2905, 3010, 3320, 3569, 4340, 4648, 5146, 5332, 5810, 6020, 6665, 7138, 8680, 9331, 10292, 10664, 11620, 12040, 12865, 13330, 14276, 17845, 18011, 18662, 20584, 23240, 24983, 25730, 26660, 28552, 35690, 36022, 37324, 46655, 49966, 51460, 53320, 71380, 72044, 74648, 90055, 93310, 99932, 102920, 110639, 124915, 142760, 144088, 180110, 186620, 199864, 221278, 249830, 360220, 373240, 442556, 499660, 553195, 720440, 774473, 885112, 999320, 1106390, 1548946, 2212780, 3097892, 3872365, 4425560, 6195784, 7744730, 15489460, 30978920]

約数ペア:

[(1, 30978920), (2, 15489460), (4, 7744730), (5, 6195784), (7, 4425560), (8, 3872365), (10, 3097892), (14, 2212780), (20, 1548946), (28, 1106390), (31, 999320), (35, 885112), (40, 774473), (43, 720440), (56, 553195), (62, 499660), (70, 442556), (83, 373240), (86, 360220), (124, 249830), (140, 221278), (155, 199864), (166, 186620), (172, 180110), (215, 144088), (217, 142760), (248, 124915), (280, 110639), (301, 102920), (310, 99932), (332, 93310), (344, 90055), (415, 74648), (430, 72044), (434, 71380), (581, 53320), (602, 51460), (620, 49966), (664, 46655), (830, 37324), (860, 36022), (868, 35690), (1085, 28552), (1162, 26660), (1204, 25730), (1240, 24983), (1333, 23240), (1505, 20584), (1660, 18662), (1720, 18011), (1736, 17845), (2170, 14276), (2324, 13330), (2408, 12865), (2573, 12040), (2666, 11620), (2905, 10664), (3010, 10292), (3320, 9331), (3569, 8680), (4340, 7138), (4648, 6665), (5146, 6020), (5332, 5810)]