1720221280

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{271}}^1\times {\mathrm{409}}^1$

素因数の和:792

約数の個数: 96

約数和(自身を含む): 4131146880

約数和(自身を除く): 2410925600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 271, 388, 409, 485, 542, 776, 818, 970, 1084, 1355, 1552, 1636, 1940, 2045, 2168, 2710, 3104, 3272, 3880, 4090, 4336, 5420, 6544, 7760, 8180, 8672, 10840, 13088, 15520, 16360, 21680, 26287, 32720, 39673, 43360, 52574, 65440, 79346, 105148, 110839, 131435, 158692, 198365, 210296, 221678, 262870, 317384, 396730, 420592, 443356, 525740, 554195, 634768, 793460, 841184, 886712, 1051480, 1108390, 1269536, 1586920, 1773424, 2102960, 2216780, 3173840, 3546848, 4205920, 4433560, 6347680, 8867120, 10751383, 17734240, 21502766, 43005532, 53756915, 86011064, 107513830, 172022128, 215027660, 344044256, 430055320, 860110640, 1720221280]

約数ペア:

[(1, 1720221280), (2, 860110640), (4, 430055320), (5, 344044256), (8, 215027660), (10, 172022128), (16, 107513830), (20, 86011064), (32, 53756915), (40, 43005532), (80, 21502766), (97, 17734240), (160, 10751383), (194, 8867120), (271, 6347680), (388, 4433560), (409, 4205920), (485, 3546848), (542, 3173840), (776, 2216780), (818, 2102960), (970, 1773424), (1084, 1586920), (1355, 1269536), (1552, 1108390), (1636, 1051480), (1940, 886712), (2045, 841184), (2168, 793460), (2710, 634768), (3104, 554195), (3272, 525740), (3880, 443356), (4090, 420592), (4336, 396730), (5420, 317384), (6544, 262870), (7760, 221678), (8180, 210296), (8672, 198365), (10840, 158692), (13088, 131435), (15520, 110839), (16360, 105148), (21680, 79346), (26287, 65440), (32720, 52574), (39673, 43360)]