1978289390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:618

約数の個数: 128

約数和(自身を含む): 4584729600

約数和(自身を除く): 2606440210

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 70, 77, 86, 110, 149, 154, 215, 298, 301, 385, 401, 430, 473, 602, 745, 770, 802, 946, 1043, 1490, 1505, 1639, 2005, 2086, 2365, 2807, 3010, 3278, 3311, 4010, 4411, 4730, 5215, 5614, 6407, 6622, 8195, 8822, 10430, 11473, 12814, 14035, 16390, 16555, 17243, 22055, 22946, 28070, 30877, 32035, 33110, 34486, 44110, 44849, 57365, 59749, 61754, 64070, 70477, 86215, 89698, 114730, 119498, 120701, 140954, 154385, 172430, 189673, 224245, 241402, 298745, 308770, 352385, 379346, 418243, 448490, 493339, 597490, 603505, 657239, 704770, 836486, 948365, 986678, 1207010, 1314478, 1327711, 1896730, 2091215, 2466695, 2569207, 2655422, 3286195, 4182430, 4600673, 4933390, 5138414, 6572390, 6638555, 9201346, 12846035, 13277110, 17984449, 23003365, 25692070, 28261277, 35968898, 46006730, 56522554, 89922245, 141306385, 179844490, 197828939, 282612770, 395657878, 989144695, 1978289390]

約数ペア:

[(1, 1978289390), (2, 989144695), (5, 395657878), (7, 282612770), (10, 197828939), (11, 179844490), (14, 141306385), (22, 89922245), (35, 56522554), (43, 46006730), (55, 35968898), (70, 28261277), (77, 25692070), (86, 23003365), (110, 17984449), (149, 13277110), (154, 12846035), (215, 9201346), (298, 6638555), (301, 6572390), (385, 5138414), (401, 4933390), (430, 4600673), (473, 4182430), (602, 3286195), (745, 2655422), (770, 2569207), (802, 2466695), (946, 2091215), (1043, 1896730), (1490, 1327711), (1505, 1314478), (1639, 1207010), (2005, 986678), (2086, 948365), (2365, 836486), (2807, 704770), (3010, 657239), (3278, 603505), (3311, 597490), (4010, 493339), (4411, 448490), (4730, 418243), (5215, 379346), (5614, 352385), (6407, 308770), (6622, 298745), (8195, 241402), (8822, 224245), (10430, 189673), (11473, 172430), (12814, 154385), (14035, 140954), (16390, 120701), (16555, 119498), (17243, 114730), (22055, 89698), (22946, 86215), (28070, 70477), (30877, 64070), (32035, 61754), (33110, 59749), (34486, 57365), (44110, 44849)]