128271220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 348643008

約数和(自身を除く): 220371788

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 73, 77, 98, 110, 140, 146, 154, 163, 196, 220, 245, 292, 308, 326, 365, 385, 490, 511, 539, 652, 730, 770, 803, 815, 980, 1022, 1078, 1141, 1460, 1540, 1606, 1630, 1793, 2044, 2156, 2282, 2555, 2695, 3212, 3260, 3577, 3586, 4015, 4564, 5110, 5390, 5621, 5705, 7154, 7172, 7987, 8030, 8965, 10220, 10780, 11242, 11410, 11899, 12551, 14308, 15974, 16060, 17885, 17930, 22484, 22820, 23798, 25102, 28105, 31948, 35770, 35860, 39347, 39935, 47596, 50204, 56210, 59495, 62755, 71540, 78694, 79870, 83293, 87857, 112420, 118990, 125510, 130889, 157388, 159740, 166586, 175714, 196735, 237980, 251020, 261778, 333172, 351428, 393470, 416465, 439285, 523556, 583051, 654445, 786940, 832930, 878570, 916223, 1166102, 1308890, 1665860, 1757140, 1832446, 2332204, 2617780, 2915255, 3664892, 4581115, 5830510, 6413561, 9162230, 11661020, 12827122, 18324460, 25654244, 32067805, 64135610, 128271220]

約数ペア:

[(1, 128271220), (2, 64135610), (4, 32067805), (5, 25654244), (7, 18324460), (10, 12827122), (11, 11661020), (14, 9162230), (20, 6413561), (22, 5830510), (28, 4581115), (35, 3664892), (44, 2915255), (49, 2617780), (55, 2332204), (70, 1832446), (73, 1757140), (77, 1665860), (98, 1308890), (110, 1166102), (140, 916223), (146, 878570), (154, 832930), (163, 786940), (196, 654445), (220, 583051), (245, 523556), (292, 439285), (308, 416465), (326, 393470), (365, 351428), (385, 333172), (490, 261778), (511, 251020), (539, 237980), (652, 196735), (730, 175714), (770, 166586), (803, 159740), (815, 157388), (980, 130889), (1022, 125510), (1078, 118990), (1141, 112420), (1460, 87857), (1540, 83293), (1606, 79870), (1630, 78694), (1793, 71540), (2044, 62755), (2156, 59495), (2282, 56210), (2555, 50204), (2695, 47596), (3212, 39935), (3260, 39347), (3577, 35860), (3586, 35770), (4015, 31948), (4564, 28105), (5110, 25102), (5390, 23798), (5621, 22820), (5705, 22484), (7154, 17930), (7172, 17885), (7987, 16060), (8030, 15974), (8965, 14308), (10220, 12551), (10780, 11899), (11242, 11410)]