16621280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 43309728

約数和(自身を除く): 26688448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 65, 80, 104, 122, 130, 131, 160, 208, 244, 260, 262, 305, 416, 488, 520, 524, 610, 655, 793, 976, 1040, 1048, 1220, 1310, 1586, 1703, 1952, 2080, 2096, 2440, 2620, 3172, 3406, 3965, 4192, 4880, 5240, 6344, 6812, 7930, 7991, 8515, 9760, 10480, 12688, 13624, 15860, 15982, 17030, 20960, 25376, 27248, 31720, 31964, 34060, 39955, 54496, 63440, 63928, 68120, 79910, 103883, 126880, 127856, 136240, 159820, 207766, 255712, 272480, 319640, 415532, 519415, 639280, 831064, 1038830, 1278560, 1662128, 2077660, 3324256, 4155320, 8310640, 16621280]

約数ペア:

[(1, 16621280), (2, 8310640), (4, 4155320), (5, 3324256), (8, 2077660), (10, 1662128), (13, 1278560), (16, 1038830), (20, 831064), (26, 639280), (32, 519415), (40, 415532), (52, 319640), (61, 272480), (65, 255712), (80, 207766), (104, 159820), (122, 136240), (130, 127856), (131, 126880), (160, 103883), (208, 79910), (244, 68120), (260, 63928), (262, 63440), (305, 54496), (416, 39955), (488, 34060), (520, 31964), (524, 31720), (610, 27248), (655, 25376), (793, 20960), (976, 17030), (1040, 15982), (1048, 15860), (1220, 13624), (1310, 12688), (1586, 10480), (1703, 9760), (1952, 8515), (2080, 7991), (2096, 7930), (2440, 6812), (2620, 6344), (3172, 5240), (3406, 4880), (3965, 4192)]