721569488

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:520

約数の個数: 80

約数和(自身を含む): 1519594704

約数和(自身を除く): 798025216

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 122, 136, 157, 244, 272, 277, 314, 488, 554, 628, 976, 1037, 1108, 1256, 2074, 2216, 2512, 2669, 4148, 4432, 4709, 5338, 8296, 9418, 9577, 10676, 16592, 16897, 18836, 19154, 21352, 33794, 37672, 38308, 42704, 43489, 67588, 75344, 76616, 86978, 135176, 153232, 162809, 173956, 270352, 287249, 325618, 347912, 574498, 651236, 695824, 739313, 1148996, 1302472, 1478626, 2297992, 2604944, 2652829, 2957252, 4595984, 5305658, 5914504, 10611316, 11829008, 21222632, 42445264, 45098093, 90196186, 180392372, 360784744, 721569488]

約数ペア:

[(1, 721569488), (2, 360784744), (4, 180392372), (8, 90196186), (16, 45098093), (17, 42445264), (34, 21222632), (61, 11829008), (68, 10611316), (122, 5914504), (136, 5305658), (157, 4595984), (244, 2957252), (272, 2652829), (277, 2604944), (314, 2297992), (488, 1478626), (554, 1302472), (628, 1148996), (976, 739313), (1037, 695824), (1108, 651236), (1256, 574498), (2074, 347912), (2216, 325618), (2512, 287249), (2669, 270352), (4148, 173956), (4432, 162809), (4709, 153232), (5338, 135176), (8296, 86978), (9418, 76616), (9577, 75344), (10676, 67588), (16592, 43489), (16897, 42704), (18836, 38308), (19154, 37672), (21352, 33794)]