61981320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1321}}^1$

素因数の和:1375

約数の個数: 128

約数和(自身を含む): 205597440

約数和(自身を除く): 143616120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 24, 30, 34, 40, 46, 51, 60, 68, 69, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 230, 255, 276, 340, 345, 391, 408, 460, 510, 552, 680, 690, 782, 920, 1020, 1173, 1321, 1380, 1564, 1955, 2040, 2346, 2642, 2760, 3128, 3910, 3963, 4692, 5284, 5865, 6605, 7820, 7926, 9384, 10568, 11730, 13210, 15640, 15852, 19815, 22457, 23460, 26420, 30383, 31704, 39630, 44914, 46920, 52840, 60766, 67371, 79260, 89828, 91149, 112285, 121532, 134742, 151915, 158520, 179656, 182298, 224570, 243064, 269484, 303830, 336855, 364596, 449140, 455745, 516511, 538968, 607660, 673710, 729192, 898280, 911490, 1033022, 1215320, 1347420, 1549533, 1822980, 2066044, 2582555, 2694840, 3099066, 3645960, 4132088, 5165110, 6198132, 7747665, 10330220, 12396264, 15495330, 20660440, 30990660, 61981320]

約数ペア:

[(1, 61981320), (2, 30990660), (3, 20660440), (4, 15495330), (5, 12396264), (6, 10330220), (8, 7747665), (10, 6198132), (12, 5165110), (15, 4132088), (17, 3645960), (20, 3099066), (23, 2694840), (24, 2582555), (30, 2066044), (34, 1822980), (40, 1549533), (46, 1347420), (51, 1215320), (60, 1033022), (68, 911490), (69, 898280), (85, 729192), (92, 673710), (102, 607660), (115, 538968), (120, 516511), (136, 455745), (138, 449140), (170, 364596), (184, 336855), (204, 303830), (230, 269484), (255, 243064), (276, 224570), (340, 182298), (345, 179656), (391, 158520), (408, 151915), (460, 134742), (510, 121532), (552, 112285), (680, 91149), (690, 89828), (782, 79260), (920, 67371), (1020, 60766), (1173, 52840), (1321, 46920), (1380, 44914), (1564, 39630), (1955, 31704), (2040, 30383), (2346, 26420), (2642, 23460), (2760, 22457), (3128, 19815), (3910, 15852), (3963, 15640), (4692, 13210), (5284, 11730), (5865, 10568), (6605, 9384), (7820, 7926)]