172981120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1272

約数の個数: 128

約数和(自身を含む): 471925440

約数和(自身を除く): 298944320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 260, 272, 320, 340, 416, 442, 520, 544, 640, 680, 832, 884, 1040, 1088, 1105, 1223, 1360, 1664, 1768, 2080, 2176, 2210, 2446, 2720, 3536, 4160, 4420, 4892, 5440, 6115, 7072, 8320, 8840, 9784, 10880, 12230, 14144, 15899, 17680, 19568, 20791, 24460, 28288, 31798, 35360, 39136, 41582, 48920, 63596, 70720, 78272, 79495, 83164, 97840, 103955, 127192, 141440, 156544, 158990, 166328, 195680, 207910, 254384, 270283, 317980, 332656, 391360, 415820, 508768, 540566, 635960, 665312, 782720, 831640, 1017536, 1081132, 1271920, 1330624, 1351415, 1663280, 2035072, 2162264, 2543840, 2661248, 2702830, 3326560, 4324528, 5087680, 5405660, 6653120, 8649056, 10175360, 10811320, 13306240, 17298112, 21622640, 34596224, 43245280, 86490560, 172981120]

約数ペア:

[(1, 172981120), (2, 86490560), (4, 43245280), (5, 34596224), (8, 21622640), (10, 17298112), (13, 13306240), (16, 10811320), (17, 10175360), (20, 8649056), (26, 6653120), (32, 5405660), (34, 5087680), (40, 4324528), (52, 3326560), (64, 2702830), (65, 2661248), (68, 2543840), (80, 2162264), (85, 2035072), (104, 1663280), (128, 1351415), (130, 1330624), (136, 1271920), (160, 1081132), (170, 1017536), (208, 831640), (221, 782720), (260, 665312), (272, 635960), (320, 540566), (340, 508768), (416, 415820), (442, 391360), (520, 332656), (544, 317980), (640, 270283), (680, 254384), (832, 207910), (884, 195680), (1040, 166328), (1088, 158990), (1105, 156544), (1223, 141440), (1360, 127192), (1664, 103955), (1768, 97840), (2080, 83164), (2176, 79495), (2210, 78272), (2446, 70720), (2720, 63596), (3536, 48920), (4160, 41582), (4420, 39136), (4892, 35360), (5440, 31798), (6115, 28288), (7072, 24460), (8320, 20791), (8840, 19568), (9784, 17680), (10880, 15899), (12230, 14144)]