20178769975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{20297}}^1$

素因数の和:20369

約数の個数: 96

約数和(自身を含む): 33827834880

約数和(自身を除く): 13649064905

約数列:

[1, 5, 7, 13, 19, 23, 25, 35, 65, 91, 95, 115, 133, 161, 175, 247, 299, 325, 437, 455, 475, 575, 665, 805, 1235, 1495, 1729, 2093, 2185, 2275, 3059, 3325, 4025, 5681, 6175, 7475, 8645, 10465, 10925, 15295, 20297, 28405, 39767, 43225, 52325, 76475, 101485, 142025, 142079, 198835, 263861, 385643, 466831, 507425, 710395, 994175, 1319305, 1847027, 1928215, 2334155, 2699501, 3267817, 3551975, 5013359, 6068803, 6596525, 8869789, 9235135, 9641075, 11670775, 13497505, 16339085, 25066795, 30344015, 35093513, 42481621, 44348945, 46175675, 62088523, 67487525, 81695425, 115307257, 125333975, 151720075, 175467565, 212408105, 221744725, 310442615, 576536285, 807150799, 877337825, 1062040525, 1552213075, 2882681425, 4035753995, 20178769975]

約数ペア:

[(1, 20178769975), (5, 4035753995), (7, 2882681425), (13, 1552213075), (19, 1062040525), (23, 877337825), (25, 807150799), (35, 576536285), (65, 310442615), (91, 221744725), (95, 212408105), (115, 175467565), (133, 151720075), (161, 125333975), (175, 115307257), (247, 81695425), (299, 67487525), (325, 62088523), (437, 46175675), (455, 44348945), (475, 42481621), (575, 35093513), (665, 30344015), (805, 25066795), (1235, 16339085), (1495, 13497505), (1729, 11670775), (2093, 9641075), (2185, 9235135), (2275, 8869789), (3059, 6596525), (3325, 6068803), (4025, 5013359), (5681, 3551975), (6175, 3267817), (7475, 2699501), (8645, 2334155), (10465, 1928215), (10925, 1847027), (15295, 1319305), (20297, 994175), (28405, 710395), (39767, 507425), (43225, 466831), (52325, 385643), (76475, 263861), (101485, 198835), (142025, 142079)]