77858980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 182891520

約数和(自身を除く): 105032540

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 83, 85, 89, 124, 155, 166, 170, 178, 310, 332, 340, 356, 415, 445, 527, 620, 830, 890, 1054, 1411, 1513, 1660, 1780, 2108, 2573, 2635, 2759, 2822, 3026, 5146, 5270, 5518, 5644, 6052, 7055, 7387, 7565, 10292, 10540, 11036, 12865, 13795, 14110, 14774, 15130, 25730, 27590, 28220, 29548, 30260, 36935, 43741, 46903, 51460, 55180, 73870, 87482, 93806, 125579, 147740, 174964, 187612, 218705, 228997, 234515, 251158, 437410, 457994, 469030, 502316, 627895, 874820, 915988, 938060, 1144985, 1255790, 2289970, 2511580, 3892949, 4579940, 7785898, 15571796, 19464745, 38929490, 77858980]

約数ペア:

[(1, 77858980), (2, 38929490), (4, 19464745), (5, 15571796), (10, 7785898), (17, 4579940), (20, 3892949), (31, 2511580), (34, 2289970), (62, 1255790), (68, 1144985), (83, 938060), (85, 915988), (89, 874820), (124, 627895), (155, 502316), (166, 469030), (170, 457994), (178, 437410), (310, 251158), (332, 234515), (340, 228997), (356, 218705), (415, 187612), (445, 174964), (527, 147740), (620, 125579), (830, 93806), (890, 87482), (1054, 73870), (1411, 55180), (1513, 51460), (1660, 46903), (1780, 43741), (2108, 36935), (2573, 30260), (2635, 29548), (2759, 28220), (2822, 27590), (3026, 25730), (5146, 15130), (5270, 14774), (5518, 14110), (5644, 13795), (6052, 12865), (7055, 11036), (7387, 10540), (7565, 10292)]