78906620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15973}}^1$

素因数の和:16014

約数の個数: 48

約数和(自身を含む): 187854240

約数和(自身を除く): 108947620

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 15973, 31946, 63892, 79865, 159730, 207649, 303487, 319460, 415298, 606974, 830596, 1038245, 1213948, 1517435, 2076490, 3034870, 3945331, 4152980, 6069740, 7890662, 15781324, 19726655, 39453310, 78906620]

約数ペア:

[(1, 78906620), (2, 39453310), (4, 19726655), (5, 15781324), (10, 7890662), (13, 6069740), (19, 4152980), (20, 3945331), (26, 3034870), (38, 2076490), (52, 1517435), (65, 1213948), (76, 1038245), (95, 830596), (130, 606974), (190, 415298), (247, 319460), (260, 303487), (380, 207649), (494, 159730), (988, 79865), (1235, 63892), (2470, 31946), (4940, 15973)]