20138746640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{541}}^1\times {\mathrm{20231}}^1$

素因数の和:20808

約数の個数: 80

約数和(自身を含む): 48951081216

約数和(自身を除く): 28812334576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 541, 920, 1082, 1840, 2164, 2705, 4328, 5410, 8656, 10820, 12443, 20231, 21640, 24886, 40462, 43280, 49772, 62215, 80924, 99544, 101155, 124430, 161848, 199088, 202310, 248860, 323696, 404620, 465313, 497720, 809240, 930626, 995440, 1618480, 1861252, 2326565, 3722504, 4653130, 7445008, 9306260, 10944971, 18612520, 21889942, 37225040, 43779884, 54724855, 87559768, 109449710, 175119536, 218899420, 251734333, 437798840, 503468666, 875597680, 1006937332, 1258671665, 2013874664, 2517343330, 4027749328, 5034686660, 10069373320, 20138746640]

約数ペア:

[(1, 20138746640), (2, 10069373320), (4, 5034686660), (5, 4027749328), (8, 2517343330), (10, 2013874664), (16, 1258671665), (20, 1006937332), (23, 875597680), (40, 503468666), (46, 437798840), (80, 251734333), (92, 218899420), (115, 175119536), (184, 109449710), (230, 87559768), (368, 54724855), (460, 43779884), (541, 37225040), (920, 21889942), (1082, 18612520), (1840, 10944971), (2164, 9306260), (2705, 7445008), (4328, 4653130), (5410, 3722504), (8656, 2326565), (10820, 1861252), (12443, 1618480), (20231, 995440), (21640, 930626), (24886, 809240), (40462, 497720), (43280, 465313), (49772, 404620), (62215, 323696), (80924, 248860), (99544, 202310), (101155, 199088), (124430, 161848)]