78892520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 214272000

約数和(自身を除く): 135379480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 61, 62, 70, 122, 124, 140, 149, 155, 217, 244, 248, 280, 298, 305, 310, 427, 434, 488, 596, 610, 620, 745, 854, 868, 1043, 1085, 1192, 1220, 1240, 1490, 1708, 1736, 1891, 2086, 2135, 2170, 2440, 2980, 3416, 3782, 4172, 4270, 4340, 4619, 5215, 5960, 7564, 8344, 8540, 8680, 9089, 9238, 9455, 10430, 13237, 15128, 17080, 18178, 18476, 18910, 20860, 23095, 26474, 32333, 36356, 36952, 37820, 41720, 45445, 46190, 52948, 63623, 64666, 66185, 72712, 75640, 90890, 92380, 105896, 127246, 129332, 132370, 161665, 181780, 184760, 254492, 258664, 264740, 281759, 318115, 323330, 363560, 508984, 529480, 563518, 636230, 646660, 1127036, 1272460, 1293320, 1408795, 1972313, 2254072, 2544920, 2817590, 3944626, 5635180, 7889252, 9861565, 11270360, 15778504, 19723130, 39446260, 78892520]

約数ペア:

[(1, 78892520), (2, 39446260), (4, 19723130), (5, 15778504), (7, 11270360), (8, 9861565), (10, 7889252), (14, 5635180), (20, 3944626), (28, 2817590), (31, 2544920), (35, 2254072), (40, 1972313), (56, 1408795), (61, 1293320), (62, 1272460), (70, 1127036), (122, 646660), (124, 636230), (140, 563518), (149, 529480), (155, 508984), (217, 363560), (244, 323330), (248, 318115), (280, 281759), (298, 264740), (305, 258664), (310, 254492), (427, 184760), (434, 181780), (488, 161665), (596, 132370), (610, 129332), (620, 127246), (745, 105896), (854, 92380), (868, 90890), (1043, 75640), (1085, 72712), (1192, 66185), (1220, 64666), (1240, 63623), (1490, 52948), (1708, 46190), (1736, 45445), (1891, 41720), (2086, 37820), (2135, 36952), (2170, 36356), (2440, 32333), (2980, 26474), (3416, 23095), (3782, 20860), (4172, 18910), (4270, 18476), (4340, 18178), (4619, 17080), (5215, 15128), (5960, 13237), (7564, 10430), (8344, 9455), (8540, 9238), (8680, 9089)]