8189860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 20483064

約数和(自身を除く): 12293204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 137, 140, 196, 244, 245, 274, 305, 427, 490, 548, 610, 685, 854, 959, 980, 1220, 1370, 1708, 1918, 2135, 2740, 2989, 3836, 4270, 4795, 5978, 6713, 8357, 8540, 9590, 11956, 13426, 14945, 16714, 19180, 26852, 29890, 33428, 33565, 41785, 58499, 59780, 67130, 83570, 116998, 134260, 167140, 233996, 292495, 409493, 584990, 818986, 1169980, 1637972, 2047465, 4094930, 8189860]

約数ペア:

[(1, 8189860), (2, 4094930), (4, 2047465), (5, 1637972), (7, 1169980), (10, 818986), (14, 584990), (20, 409493), (28, 292495), (35, 233996), (49, 167140), (61, 134260), (70, 116998), (98, 83570), (122, 67130), (137, 59780), (140, 58499), (196, 41785), (244, 33565), (245, 33428), (274, 29890), (305, 26852), (427, 19180), (490, 16714), (548, 14945), (610, 13426), (685, 11956), (854, 9590), (959, 8540), (980, 8357), (1220, 6713), (1370, 5978), (1708, 4795), (1918, 4270), (2135, 3836), (2740, 2989)]