168308920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 431101440

約数和(自身を除く): 262792520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 53, 62, 65, 104, 106, 124, 130, 155, 197, 212, 248, 260, 265, 310, 394, 403, 424, 520, 530, 620, 689, 788, 806, 985, 1060, 1240, 1378, 1576, 1612, 1643, 1970, 2015, 2120, 2561, 2756, 3224, 3286, 3445, 3940, 4030, 5122, 5512, 6107, 6572, 6890, 7880, 8060, 8215, 10244, 10441, 12214, 12805, 13144, 13780, 16120, 16430, 20488, 20882, 21359, 24428, 25610, 27560, 30535, 32860, 41764, 42718, 48856, 51220, 52205, 61070, 65720, 79391, 83528, 85436, 102440, 104410, 106795, 122140, 135733, 158782, 170872, 208820, 213590, 244280, 271466, 317564, 323671, 396955, 417640, 427180, 542932, 635128, 647342, 678665, 793910, 854360, 1085864, 1294684, 1357330, 1587820, 1618355, 2589368, 2714660, 3175640, 3236710, 4207723, 5429320, 6473420, 8415446, 12946840, 16830892, 21038615, 33661784, 42077230, 84154460, 168308920]

約数ペア:

[(1, 168308920), (2, 84154460), (4, 42077230), (5, 33661784), (8, 21038615), (10, 16830892), (13, 12946840), (20, 8415446), (26, 6473420), (31, 5429320), (40, 4207723), (52, 3236710), (53, 3175640), (62, 2714660), (65, 2589368), (104, 1618355), (106, 1587820), (124, 1357330), (130, 1294684), (155, 1085864), (197, 854360), (212, 793910), (248, 678665), (260, 647342), (265, 635128), (310, 542932), (394, 427180), (403, 417640), (424, 396955), (520, 323671), (530, 317564), (620, 271466), (689, 244280), (788, 213590), (806, 208820), (985, 170872), (1060, 158782), (1240, 135733), (1378, 122140), (1576, 106795), (1612, 104410), (1643, 102440), (1970, 85436), (2015, 83528), (2120, 79391), (2561, 65720), (2756, 61070), (3224, 52205), (3286, 51220), (3445, 48856), (3940, 42718), (4030, 41764), (5122, 32860), (5512, 30535), (6107, 27560), (6572, 25610), (6890, 24428), (7880, 21359), (8060, 20882), (8215, 20488), (10244, 16430), (10441, 16120), (12214, 13780), (12805, 13144)]