256979268

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1669}}^1$

素因数の和:1746

約数の個数: 144

約数和(自身を含む): 816990720

約数和(自身を除く): 560011452

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 47, 52, 63, 78, 84, 91, 94, 117, 126, 141, 156, 182, 188, 234, 252, 273, 282, 329, 364, 423, 468, 546, 564, 611, 658, 819, 846, 987, 1092, 1222, 1316, 1638, 1669, 1692, 1833, 1974, 2444, 2961, 3276, 3338, 3666, 3948, 4277, 5007, 5499, 5922, 6676, 7332, 8554, 10014, 10998, 11683, 11844, 12831, 15021, 17108, 20028, 21697, 21996, 23366, 25662, 30042, 35049, 38493, 43394, 46732, 51324, 60084, 65091, 70098, 76986, 78443, 86788, 105147, 130182, 140196, 151879, 153972, 156886, 195273, 210294, 235329, 260364, 303758, 313772, 390546, 420588, 455637, 470658, 549101, 607516, 705987, 781092, 911274, 941316, 1019759, 1098202, 1366911, 1411974, 1647303, 1822548, 2039518, 2196404, 2733822, 2823948, 3059277, 3294606, 4079036, 4941909, 5467644, 6118554, 6589212, 7138313, 9177831, 9883818, 12237108, 14276626, 18355662, 19767636, 21414939, 28553252, 36711324, 42829878, 64244817, 85659756, 128489634, 256979268]

約数ペア:

[(1, 256979268), (2, 128489634), (3, 85659756), (4, 64244817), (6, 42829878), (7, 36711324), (9, 28553252), (12, 21414939), (13, 19767636), (14, 18355662), (18, 14276626), (21, 12237108), (26, 9883818), (28, 9177831), (36, 7138313), (39, 6589212), (42, 6118554), (47, 5467644), (52, 4941909), (63, 4079036), (78, 3294606), (84, 3059277), (91, 2823948), (94, 2733822), (117, 2196404), (126, 2039518), (141, 1822548), (156, 1647303), (182, 1411974), (188, 1366911), (234, 1098202), (252, 1019759), (273, 941316), (282, 911274), (329, 781092), (364, 705987), (423, 607516), (468, 549101), (546, 470658), (564, 455637), (611, 420588), (658, 390546), (819, 313772), (846, 303758), (987, 260364), (1092, 235329), (1222, 210294), (1316, 195273), (1638, 156886), (1669, 153972), (1692, 151879), (1833, 140196), (1974, 130182), (2444, 105147), (2961, 86788), (3276, 78443), (3338, 76986), (3666, 70098), (3948, 65091), (4277, 60084), (5007, 51324), (5499, 46732), (5922, 43394), (6676, 38493), (7332, 35049), (8554, 30042), (10014, 25662), (10998, 23366), (11683, 21996), (11844, 21697), (12831, 20028), (15021, 17108)]