78718720

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:801

約数の個数: 72

約数和(自身を含む): 190950480

約数和(自身を除く): 112231760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 320, 356, 445, 640, 691, 712, 890, 1280, 1382, 1424, 1780, 2764, 2848, 3455, 3560, 5528, 5696, 6910, 7120, 11056, 11392, 13820, 14240, 22112, 22784, 27640, 28480, 44224, 55280, 56960, 61499, 88448, 110560, 113920, 122998, 176896, 221120, 245996, 307495, 442240, 491992, 614990, 884480, 983984, 1229980, 1967968, 2459960, 3935936, 4919920, 7871872, 9839840, 15743744, 19679680, 39359360, 78718720]

約数ペア:

[(1, 78718720), (2, 39359360), (4, 19679680), (5, 15743744), (8, 9839840), (10, 7871872), (16, 4919920), (20, 3935936), (32, 2459960), (40, 1967968), (64, 1229980), (80, 983984), (89, 884480), (128, 614990), (160, 491992), (178, 442240), (256, 307495), (320, 245996), (356, 221120), (445, 176896), (640, 122998), (691, 113920), (712, 110560), (890, 88448), (1280, 61499), (1382, 56960), (1424, 55280), (1780, 44224), (2764, 28480), (2848, 27640), (3455, 22784), (3560, 22112), (5528, 14240), (5696, 13820), (6910, 11392), (7120, 11056)]