80720750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 166795200

約数和(自身を除く): 86074450

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 149, 197, 250, 275, 298, 394, 550, 745, 985, 1375, 1490, 1639, 1970, 2167, 2750, 3278, 3725, 4334, 4925, 7450, 8195, 9850, 10835, 16390, 18625, 21670, 24625, 29353, 37250, 40975, 49250, 54175, 58706, 81950, 108350, 146765, 204875, 270875, 293530, 322883, 409750, 541750, 645766, 733825, 1467650, 1614415, 3228830, 3669125, 7338250, 8072075, 16144150, 40360375, 80720750]

約数ペア:

[(1, 80720750), (2, 40360375), (5, 16144150), (10, 8072075), (11, 7338250), (22, 3669125), (25, 3228830), (50, 1614415), (55, 1467650), (110, 733825), (125, 645766), (149, 541750), (197, 409750), (250, 322883), (275, 293530), (298, 270875), (394, 204875), (550, 146765), (745, 108350), (985, 81950), (1375, 58706), (1490, 54175), (1639, 49250), (1970, 40975), (2167, 37250), (2750, 29353), (3278, 24625), (3725, 21670), (4334, 18625), (4925, 16390), (7450, 10835), (8195, 9850)]