19657040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:528

約数の個数: 80

約数和(自身を含む): 50528016

約数和(自身を除く): 30870976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 328, 410, 461, 520, 533, 656, 820, 922, 1040, 1066, 1640, 1844, 2132, 2305, 2665, 3280, 3688, 4264, 4610, 5330, 5993, 7376, 8528, 9220, 10660, 11986, 18440, 18901, 21320, 23972, 29965, 36880, 37802, 42640, 47944, 59930, 75604, 94505, 95888, 119860, 151208, 189010, 239720, 245713, 302416, 378020, 479440, 491426, 756040, 982852, 1228565, 1512080, 1965704, 2457130, 3931408, 4914260, 9828520, 19657040]

約数ペア:

[(1, 19657040), (2, 9828520), (4, 4914260), (5, 3931408), (8, 2457130), (10, 1965704), (13, 1512080), (16, 1228565), (20, 982852), (26, 756040), (40, 491426), (41, 479440), (52, 378020), (65, 302416), (80, 245713), (82, 239720), (104, 189010), (130, 151208), (164, 119860), (205, 95888), (208, 94505), (260, 75604), (328, 59930), (410, 47944), (461, 42640), (520, 37802), (533, 36880), (656, 29965), (820, 23972), (922, 21320), (1040, 18901), (1066, 18440), (1640, 11986), (1844, 10660), (2132, 9220), (2305, 8528), (2665, 7376), (3280, 5993), (3688, 5330), (4264, 4610)]