20458090940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{61}}^1\times {\mathrm{48889}}^1$

素因数の和:48980

約数の個数: 96

約数和(自身を含む): 50923824000

約数和(自身を除く): 30465733060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 343, 427, 490, 610, 686, 854, 980, 1220, 1372, 1708, 1715, 2135, 2989, 3430, 4270, 5978, 6860, 8540, 11956, 14945, 20923, 29890, 41846, 48889, 59780, 83692, 97778, 104615, 195556, 209230, 244445, 342223, 418460, 488890, 684446, 977780, 1368892, 1711115, 2395561, 2982229, 3422230, 4791122, 5964458, 6844460, 9582244, 11928916, 11977805, 14911145, 16768927, 20875603, 23955610, 29822290, 33537854, 41751206, 47911220, 59644580, 67075708, 83502412, 83844635, 104378015, 146129221, 167689270, 208756030, 292258442, 335378540, 417512060, 584516884, 730646105, 1022904547, 1461292210, 2045809094, 2922584420, 4091618188, 5114522735, 10229045470, 20458090940]

約数ペア:

[(1, 20458090940), (2, 10229045470), (4, 5114522735), (5, 4091618188), (7, 2922584420), (10, 2045809094), (14, 1461292210), (20, 1022904547), (28, 730646105), (35, 584516884), (49, 417512060), (61, 335378540), (70, 292258442), (98, 208756030), (122, 167689270), (140, 146129221), (196, 104378015), (244, 83844635), (245, 83502412), (305, 67075708), (343, 59644580), (427, 47911220), (490, 41751206), (610, 33537854), (686, 29822290), (854, 23955610), (980, 20875603), (1220, 16768927), (1372, 14911145), (1708, 11977805), (1715, 11928916), (2135, 9582244), (2989, 6844460), (3430, 5964458), (4270, 4791122), (5978, 3422230), (6860, 2982229), (8540, 2395561), (11956, 1711115), (14945, 1368892), (20923, 977780), (29890, 684446), (41846, 488890), (48889, 418460), (59780, 342223), (83692, 244445), (97778, 209230), (104615, 195556)]