28656628

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 96

約数和(自身を含む): 71463168

約数和(自身を除く): 42806540

約数列:

[1, 2, 4, 7, 11, 13, 14, 17, 22, 26, 28, 34, 44, 52, 68, 77, 91, 119, 143, 154, 182, 187, 221, 238, 286, 308, 364, 374, 421, 442, 476, 572, 748, 842, 884, 1001, 1309, 1547, 1684, 2002, 2431, 2618, 2947, 3094, 4004, 4631, 4862, 5236, 5473, 5894, 6188, 7157, 9262, 9724, 10946, 11788, 14314, 17017, 18524, 21892, 28628, 32417, 34034, 38311, 50099, 60203, 64834, 68068, 76622, 78727, 93041, 100198, 120406, 129668, 153244, 157454, 186082, 200396, 240812, 314908, 372164, 421421, 551089, 651287, 842842, 1023451, 1102178, 1302574, 1685684, 2046902, 2204356, 2605148, 4093804, 7164157, 14328314, 28656628]

約数ペア:

[(1, 28656628), (2, 14328314), (4, 7164157), (7, 4093804), (11, 2605148), (13, 2204356), (14, 2046902), (17, 1685684), (22, 1302574), (26, 1102178), (28, 1023451), (34, 842842), (44, 651287), (52, 551089), (68, 421421), (77, 372164), (91, 314908), (119, 240812), (143, 200396), (154, 186082), (182, 157454), (187, 153244), (221, 129668), (238, 120406), (286, 100198), (308, 93041), (364, 78727), (374, 76622), (421, 68068), (442, 64834), (476, 60203), (572, 50099), (748, 38311), (842, 34034), (884, 32417), (1001, 28628), (1309, 21892), (1547, 18524), (1684, 17017), (2002, 14314), (2431, 11788), (2618, 10946), (2947, 9724), (3094, 9262), (4004, 7157), (4631, 6188), (4862, 5894), (5236, 5473)]