78668775

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 151289424

約数和(自身を除く): 72620649

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 131, 153, 157, 225, 255, 393, 425, 471, 655, 765, 785, 1179, 1275, 1413, 1965, 2227, 2355, 2669, 3275, 3825, 3925, 5895, 6681, 7065, 8007, 9825, 11135, 11775, 13345, 20043, 20567, 24021, 29475, 33405, 35325, 40035, 55675, 61701, 66725, 100215, 102835, 120105, 167025, 185103, 200175, 308505, 349639, 501075, 514175, 600525, 925515, 1048917, 1542525, 1748195, 3146751, 4627575, 5244585, 8740975, 15733755, 26222925, 78668775]

約数ペア:

[(1, 78668775), (3, 26222925), (5, 15733755), (9, 8740975), (15, 5244585), (17, 4627575), (25, 3146751), (45, 1748195), (51, 1542525), (75, 1048917), (85, 925515), (131, 600525), (153, 514175), (157, 501075), (225, 349639), (255, 308505), (393, 200175), (425, 185103), (471, 167025), (655, 120105), (765, 102835), (785, 100215), (1179, 66725), (1275, 61701), (1413, 55675), (1965, 40035), (2227, 35325), (2355, 33405), (2669, 29475), (3275, 24021), (3825, 20567), (3925, 20043), (5895, 13345), (6681, 11775), (7065, 11135), (8007, 9825)]