257488140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6737}}^1$

素因数の和:6776

約数の個数: 144

約数和(自身を含む): 903323232

約数和(自身を除く): 645835092

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2548, 2730, 2940, 3185, 3822, 5460, 6370, 6737, 7644, 9555, 12740, 13474, 19110, 20211, 26948, 33685, 38220, 40422, 47159, 67370, 80844, 87581, 94318, 101055, 134740, 141477, 175162, 188636, 202110, 235795, 262743, 282954, 330113, 350324, 404220, 437905, 471590, 525486, 565908, 613067, 660226, 707385, 875810, 943180, 990339, 1050972, 1226134, 1313715, 1320452, 1414770, 1650565, 1751620, 1839201, 1980678, 2452268, 2627430, 2829540, 3065335, 3301130, 3678402, 3961356, 4291469, 4951695, 5254860, 6130670, 6602260, 7356804, 8582938, 9196005, 9903390, 12261340, 12874407, 17165876, 18392010, 19806780, 21457345, 25748814, 36784020, 42914690, 51497628, 64372035, 85829380, 128744070, 257488140]

約数ペア:

[(1, 257488140), (2, 128744070), (3, 85829380), (4, 64372035), (5, 51497628), (6, 42914690), (7, 36784020), (10, 25748814), (12, 21457345), (13, 19806780), (14, 18392010), (15, 17165876), (20, 12874407), (21, 12261340), (26, 9903390), (28, 9196005), (30, 8582938), (35, 7356804), (39, 6602260), (42, 6130670), (49, 5254860), (52, 4951695), (60, 4291469), (65, 3961356), (70, 3678402), (78, 3301130), (84, 3065335), (91, 2829540), (98, 2627430), (105, 2452268), (130, 1980678), (140, 1839201), (147, 1751620), (156, 1650565), (182, 1414770), (195, 1320452), (196, 1313715), (210, 1226134), (245, 1050972), (260, 990339), (273, 943180), (294, 875810), (364, 707385), (390, 660226), (420, 613067), (455, 565908), (490, 525486), (546, 471590), (588, 437905), (637, 404220), (735, 350324), (780, 330113), (910, 282954), (980, 262743), (1092, 235795), (1274, 202110), (1365, 188636), (1470, 175162), (1820, 141477), (1911, 134740), (2548, 101055), (2730, 94318), (2940, 87581), (3185, 80844), (3822, 67370), (5460, 47159), (6370, 40422), (6737, 38220), (7644, 33685), (9555, 26948), (12740, 20211), (13474, 19110)]