64781340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 205503648

約数和(自身を除く): 140722308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 23, 26, 30, 39, 46, 52, 60, 65, 69, 78, 92, 115, 130, 138, 156, 157, 195, 230, 260, 276, 299, 314, 345, 390, 460, 471, 529, 598, 628, 690, 780, 785, 897, 942, 1058, 1196, 1380, 1495, 1570, 1587, 1794, 1884, 2041, 2116, 2355, 2645, 2990, 3140, 3174, 3588, 3611, 4082, 4485, 4710, 5290, 5980, 6123, 6348, 6877, 7222, 7935, 8164, 8970, 9420, 10205, 10580, 10833, 12246, 13754, 14444, 15870, 17940, 18055, 20410, 20631, 21666, 24492, 27508, 30615, 31740, 34385, 36110, 40820, 41262, 43332, 46943, 54165, 61230, 68770, 72220, 82524, 83053, 93886, 103155, 108330, 122460, 137540, 140829, 166106, 187772, 206310, 216660, 234715, 249159, 281658, 332212, 412620, 415265, 469430, 498318, 563316, 704145, 830530, 938860, 996636, 1079689, 1245795, 1408290, 1661060, 2159378, 2491590, 2816580, 3239067, 4318756, 4983180, 5398445, 6478134, 10796890, 12956268, 16195335, 21593780, 32390670, 64781340]

約数ペア:

[(1, 64781340), (2, 32390670), (3, 21593780), (4, 16195335), (5, 12956268), (6, 10796890), (10, 6478134), (12, 5398445), (13, 4983180), (15, 4318756), (20, 3239067), (23, 2816580), (26, 2491590), (30, 2159378), (39, 1661060), (46, 1408290), (52, 1245795), (60, 1079689), (65, 996636), (69, 938860), (78, 830530), (92, 704145), (115, 563316), (130, 498318), (138, 469430), (156, 415265), (157, 412620), (195, 332212), (230, 281658), (260, 249159), (276, 234715), (299, 216660), (314, 206310), (345, 187772), (390, 166106), (460, 140829), (471, 137540), (529, 122460), (598, 108330), (628, 103155), (690, 93886), (780, 83053), (785, 82524), (897, 72220), (942, 68770), (1058, 61230), (1196, 54165), (1380, 46943), (1495, 43332), (1570, 41262), (1587, 40820), (1794, 36110), (1884, 34385), (2041, 31740), (2116, 30615), (2355, 27508), (2645, 24492), (2990, 21666), (3140, 20631), (3174, 20410), (3588, 18055), (3611, 17940), (4082, 15870), (4485, 14444), (4710, 13754), (5290, 12246), (5980, 10833), (6123, 10580), (6348, 10205), (6877, 9420), (7222, 8970), (7935, 8164)]