78189900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{263}}^1\times {\mathrm{991}}^1$

素因数の和:1271

約数の個数: 72

約数和(自身を含む): 227318784

約数和(自身を除く): 149128884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 263, 300, 526, 789, 991, 1052, 1315, 1578, 1982, 2630, 2973, 3156, 3945, 3964, 4955, 5260, 5946, 6575, 7890, 9910, 11892, 13150, 14865, 15780, 19725, 19820, 24775, 26300, 29730, 39450, 49550, 59460, 74325, 78900, 99100, 148650, 260633, 297300, 521266, 781899, 1042532, 1303165, 1563798, 2606330, 3127596, 3909495, 5212660, 6515825, 7818990, 13031650, 15637980, 19547475, 26063300, 39094950, 78189900]

約数ペア:

[(1, 78189900), (2, 39094950), (3, 26063300), (4, 19547475), (5, 15637980), (6, 13031650), (10, 7818990), (12, 6515825), (15, 5212660), (20, 3909495), (25, 3127596), (30, 2606330), (50, 1563798), (60, 1303165), (75, 1042532), (100, 781899), (150, 521266), (263, 297300), (300, 260633), (526, 148650), (789, 99100), (991, 78900), (1052, 74325), (1315, 59460), (1578, 49550), (1982, 39450), (2630, 29730), (2973, 26300), (3156, 24775), (3945, 19820), (3964, 19725), (4955, 15780), (5260, 14865), (5946, 13150), (6575, 11892), (7890, 9910)]