18978077950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{16561}}^1$

素因数の和:16670

約数の個数: 96

約数和(自身を含む): 39849761952

約数和(自身を除く): 20871684002

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 43, 50, 65, 82, 86, 130, 205, 215, 325, 410, 430, 533, 559, 650, 1025, 1066, 1075, 1118, 1763, 2050, 2150, 2665, 2795, 3526, 5330, 5590, 8815, 13325, 13975, 16561, 17630, 22919, 26650, 27950, 33122, 44075, 45838, 82805, 88150, 114595, 165610, 215293, 229190, 414025, 430586, 572975, 679001, 712123, 828050, 1076465, 1145950, 1358002, 1424246, 2152930, 3395005, 3560615, 5382325, 6790010, 7121230, 8827013, 9257599, 10764650, 16975025, 17654026, 17803075, 18515198, 29197043, 33950050, 35606150, 44135065, 46287995, 58394086, 88270130, 92575990, 145985215, 220675325, 231439975, 291970430, 379561559, 441350650, 462879950, 729926075, 759123118, 1459852150, 1897807795, 3795615590, 9489038975, 18978077950]

約数ペア:

[(1, 18978077950), (2, 9489038975), (5, 3795615590), (10, 1897807795), (13, 1459852150), (25, 759123118), (26, 729926075), (41, 462879950), (43, 441350650), (50, 379561559), (65, 291970430), (82, 231439975), (86, 220675325), (130, 145985215), (205, 92575990), (215, 88270130), (325, 58394086), (410, 46287995), (430, 44135065), (533, 35606150), (559, 33950050), (650, 29197043), (1025, 18515198), (1066, 17803075), (1075, 17654026), (1118, 16975025), (1763, 10764650), (2050, 9257599), (2150, 8827013), (2665, 7121230), (2795, 6790010), (3526, 5382325), (5330, 3560615), (5590, 3395005), (8815, 2152930), (13325, 1424246), (13975, 1358002), (16561, 1145950), (17630, 1076465), (22919, 828050), (26650, 712123), (27950, 679001), (33122, 572975), (44075, 430586), (45838, 414025), (82805, 229190), (88150, 215293), (114595, 165610)]