128974720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{28789}}^1$

素因数の和:28815

約数の個数: 64

約数和(自身を含む): 352389600

約数和(自身を除く): 223414880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 28789, 57578, 115156, 143945, 201523, 230312, 287890, 403046, 460624, 575780, 806092, 921248, 1007615, 1151560, 1612184, 1842496, 2015230, 2303120, 3224368, 3684992, 4030460, 4606240, 6448736, 8060920, 9212480, 12897472, 16121840, 18424960, 25794944, 32243680, 64487360, 128974720]

約数ペア:

[(1, 128974720), (2, 64487360), (4, 32243680), (5, 25794944), (7, 18424960), (8, 16121840), (10, 12897472), (14, 9212480), (16, 8060920), (20, 6448736), (28, 4606240), (32, 4030460), (35, 3684992), (40, 3224368), (56, 2303120), (64, 2015230), (70, 1842496), (80, 1612184), (112, 1151560), (128, 1007615), (140, 921248), (160, 806092), (224, 575780), (280, 460624), (320, 403046), (448, 287890), (560, 230312), (640, 201523), (896, 143945), (1120, 115156), (2240, 57578), (4480, 28789)]