7806780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 120

約数和(自身を含む): 25206720

約数和(自身を除く): 17399940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 79, 81, 90, 108, 122, 135, 158, 162, 180, 183, 237, 244, 270, 305, 316, 324, 366, 395, 405, 474, 540, 549, 610, 711, 732, 790, 810, 915, 948, 1098, 1185, 1220, 1422, 1580, 1620, 1647, 1830, 2133, 2196, 2370, 2745, 2844, 3294, 3555, 3660, 4266, 4740, 4819, 4941, 5490, 6399, 6588, 7110, 8235, 8532, 9638, 9882, 10665, 10980, 12798, 14220, 14457, 16470, 19276, 19764, 21330, 24095, 24705, 25596, 28914, 31995, 32940, 42660, 43371, 48190, 49410, 57828, 63990, 72285, 86742, 96380, 98820, 127980, 130113, 144570, 173484, 216855, 260226, 289140, 390339, 433710, 520452, 650565, 780678, 867420, 1301130, 1561356, 1951695, 2602260, 3903390, 7806780]

約数ペア:

[(1, 7806780), (2, 3903390), (3, 2602260), (4, 1951695), (5, 1561356), (6, 1301130), (9, 867420), (10, 780678), (12, 650565), (15, 520452), (18, 433710), (20, 390339), (27, 289140), (30, 260226), (36, 216855), (45, 173484), (54, 144570), (60, 130113), (61, 127980), (79, 98820), (81, 96380), (90, 86742), (108, 72285), (122, 63990), (135, 57828), (158, 49410), (162, 48190), (180, 43371), (183, 42660), (237, 32940), (244, 31995), (270, 28914), (305, 25596), (316, 24705), (324, 24095), (366, 21330), (395, 19764), (405, 19276), (474, 16470), (540, 14457), (549, 14220), (610, 12798), (711, 10980), (732, 10665), (790, 9882), (810, 9638), (915, 8532), (948, 8235), (1098, 7110), (1185, 6588), (1220, 6399), (1422, 5490), (1580, 4941), (1620, 4819), (1647, 4740), (1830, 4266), (2133, 3660), (2196, 3555), (2370, 3294), (2745, 2844)]