78939640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 203212800

約数和(自身を除く): 124273160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 59, 62, 65, 83, 104, 118, 124, 130, 155, 166, 236, 248, 260, 295, 310, 332, 403, 415, 472, 520, 590, 620, 664, 767, 806, 830, 1079, 1180, 1240, 1534, 1612, 1660, 1829, 2015, 2158, 2360, 2573, 3068, 3224, 3320, 3658, 3835, 4030, 4316, 4897, 5146, 5395, 6136, 7316, 7670, 8060, 8632, 9145, 9794, 10292, 10790, 12865, 14632, 15340, 16120, 18290, 19588, 20584, 21580, 23777, 24485, 25730, 30680, 33449, 36580, 39176, 43160, 47554, 48970, 51460, 63661, 66898, 73160, 95108, 97940, 102920, 118885, 127322, 133796, 151807, 167245, 190216, 195880, 237770, 254644, 267592, 303614, 318305, 334490, 475540, 509288, 607228, 636610, 668980, 759035, 951080, 1214456, 1273220, 1337960, 1518070, 1973491, 2546440, 3036140, 3946982, 6072280, 7893964, 9867455, 15787928, 19734910, 39469820, 78939640]

約数ペア:

[(1, 78939640), (2, 39469820), (4, 19734910), (5, 15787928), (8, 9867455), (10, 7893964), (13, 6072280), (20, 3946982), (26, 3036140), (31, 2546440), (40, 1973491), (52, 1518070), (59, 1337960), (62, 1273220), (65, 1214456), (83, 951080), (104, 759035), (118, 668980), (124, 636610), (130, 607228), (155, 509288), (166, 475540), (236, 334490), (248, 318305), (260, 303614), (295, 267592), (310, 254644), (332, 237770), (403, 195880), (415, 190216), (472, 167245), (520, 151807), (590, 133796), (620, 127322), (664, 118885), (767, 102920), (806, 97940), (830, 95108), (1079, 73160), (1180, 66898), (1240, 63661), (1534, 51460), (1612, 48970), (1660, 47554), (1829, 43160), (2015, 39176), (2158, 36580), (2360, 33449), (2573, 30680), (3068, 25730), (3224, 24485), (3320, 23777), (3658, 21580), (3835, 20584), (4030, 19588), (4316, 18290), (4897, 16120), (5146, 15340), (5395, 14632), (6136, 12865), (7316, 10790), (7670, 10292), (8060, 9794), (8632, 9145)]