20808280840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1\times {\mathrm{2239}}^1$

素因数の和:2519

約数の個数: 128

約数和(自身を含む): 50512896000

約数和(自身を除く): 29704615160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 173, 316, 340, 346, 395, 632, 680, 692, 790, 865, 1343, 1384, 1580, 1730, 2239, 2686, 2941, 3160, 3460, 4478, 5372, 5882, 6715, 6920, 8956, 10744, 11195, 11764, 13430, 13667, 14705, 17912, 22390, 23528, 26860, 27334, 29410, 38063, 44780, 53720, 54668, 58820, 68335, 76126, 89560, 109336, 117640, 136670, 152252, 176881, 190315, 232339, 273340, 304504, 353762, 380630, 387347, 464678, 546680, 707524, 761260, 774694, 884405, 929356, 1161695, 1415048, 1522520, 1549388, 1768810, 1858712, 1936735, 2323390, 3006977, 3098776, 3537620, 3873470, 4646780, 6013954, 6584899, 7075240, 7746940, 9293560, 12027908, 13169798, 15034885, 15493880, 24055816, 26339596, 30069770, 30600413, 32924495, 52679192, 60139540, 61200826, 65848990, 120279080, 122401652, 131697980, 153002065, 244803304, 263395960, 306004130, 520207021, 612008260, 1040414042, 1224016520, 2080828084, 2601035105, 4161656168, 5202070210, 10404140420, 20808280840]

約数ペア:

[(1, 20808280840), (2, 10404140420), (4, 5202070210), (5, 4161656168), (8, 2601035105), (10, 2080828084), (17, 1224016520), (20, 1040414042), (34, 612008260), (40, 520207021), (68, 306004130), (79, 263395960), (85, 244803304), (136, 153002065), (158, 131697980), (170, 122401652), (173, 120279080), (316, 65848990), (340, 61200826), (346, 60139540), (395, 52679192), (632, 32924495), (680, 30600413), (692, 30069770), (790, 26339596), (865, 24055816), (1343, 15493880), (1384, 15034885), (1580, 13169798), (1730, 12027908), (2239, 9293560), (2686, 7746940), (2941, 7075240), (3160, 6584899), (3460, 6013954), (4478, 4646780), (5372, 3873470), (5882, 3537620), (6715, 3098776), (6920, 3006977), (8956, 2323390), (10744, 1936735), (11195, 1858712), (11764, 1768810), (13430, 1549388), (13667, 1522520), (14705, 1415048), (17912, 1161695), (22390, 929356), (23528, 884405), (26860, 774694), (27334, 761260), (29410, 707524), (38063, 546680), (44780, 464678), (53720, 387347), (54668, 380630), (58820, 353762), (68335, 304504), (76126, 273340), (89560, 232339), (109336, 190315), (117640, 176881), (136670, 152252)]