81840040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1973}}^1$

素因数の和:2062

約数の個数: 64

約数和(自身を含む): 198268560

約数和(自身を除く): 116428520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 61, 68, 85, 122, 136, 170, 244, 305, 340, 488, 610, 680, 1037, 1220, 1973, 2074, 2440, 3946, 4148, 5185, 7892, 8296, 9865, 10370, 15784, 19730, 20740, 33541, 39460, 41480, 67082, 78920, 120353, 134164, 167705, 240706, 268328, 335410, 481412, 601765, 670820, 962824, 1203530, 1341640, 2046001, 2407060, 4092002, 4814120, 8184004, 10230005, 16368008, 20460010, 40920020, 81840040]

約数ペア:

[(1, 81840040), (2, 40920020), (4, 20460010), (5, 16368008), (8, 10230005), (10, 8184004), (17, 4814120), (20, 4092002), (34, 2407060), (40, 2046001), (61, 1341640), (68, 1203530), (85, 962824), (122, 670820), (136, 601765), (170, 481412), (244, 335410), (305, 268328), (340, 240706), (488, 167705), (610, 134164), (680, 120353), (1037, 78920), (1220, 67082), (1973, 41480), (2074, 39460), (2440, 33541), (3946, 20740), (4148, 19730), (5185, 15784), (7892, 10370), (8296, 9865)]