278320140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{220889}}^1$

素因数の和:220911

約数の個数: 72

約数和(自身を含む): 964847520

約数和(自身を除く): 686527380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 220889, 441778, 662667, 883556, 1104445, 1325334, 1546223, 1988001, 2208890, 2650668, 3092446, 3313335, 3976002, 4417780, 4638669, 6184892, 6626670, 7731115, 7952004, 9277338, 9940005, 13253340, 13916007, 15462230, 18554676, 19880010, 23193345, 27832014, 30924460, 39760020, 46386690, 55664028, 69580035, 92773380, 139160070, 278320140]

約数ペア:

[(1, 278320140), (2, 139160070), (3, 92773380), (4, 69580035), (5, 55664028), (6, 46386690), (7, 39760020), (9, 30924460), (10, 27832014), (12, 23193345), (14, 19880010), (15, 18554676), (18, 15462230), (20, 13916007), (21, 13253340), (28, 9940005), (30, 9277338), (35, 7952004), (36, 7731115), (42, 6626670), (45, 6184892), (60, 4638669), (63, 4417780), (70, 3976002), (84, 3313335), (90, 3092446), (105, 2650668), (126, 2208890), (140, 1988001), (180, 1546223), (210, 1325334), (252, 1104445), (315, 883556), (420, 662667), (630, 441778), (1260, 220889)]