28774760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 77011560

約数和(自身を除く): 48236800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 53, 56, 70, 98, 106, 140, 196, 212, 245, 265, 277, 280, 371, 392, 424, 490, 530, 554, 742, 980, 1060, 1108, 1385, 1484, 1855, 1939, 1960, 2120, 2216, 2597, 2770, 2968, 3710, 3878, 5194, 5540, 7420, 7756, 9695, 10388, 11080, 12985, 13573, 14681, 14840, 15512, 19390, 20776, 25970, 27146, 29362, 38780, 51940, 54292, 58724, 67865, 73405, 77560, 102767, 103880, 108584, 117448, 135730, 146810, 205534, 271460, 293620, 411068, 513835, 542920, 587240, 719369, 822136, 1027670, 1438738, 2055340, 2877476, 3596845, 4110680, 5754952, 7193690, 14387380, 28774760]

約数ペア:

[(1, 28774760), (2, 14387380), (4, 7193690), (5, 5754952), (7, 4110680), (8, 3596845), (10, 2877476), (14, 2055340), (20, 1438738), (28, 1027670), (35, 822136), (40, 719369), (49, 587240), (53, 542920), (56, 513835), (70, 411068), (98, 293620), (106, 271460), (140, 205534), (196, 146810), (212, 135730), (245, 117448), (265, 108584), (277, 103880), (280, 102767), (371, 77560), (392, 73405), (424, 67865), (490, 58724), (530, 54292), (554, 51940), (742, 38780), (980, 29362), (1060, 27146), (1108, 25970), (1385, 20776), (1484, 19390), (1855, 15512), (1939, 14840), (1960, 14681), (2120, 13573), (2216, 12985), (2597, 11080), (2770, 10388), (2968, 9695), (3710, 7756), (3878, 7420), (5194, 5540)]