21900830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 47996928

約数和(自身を除く): 26096098

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 61, 70, 115, 122, 161, 223, 230, 305, 322, 427, 446, 610, 805, 854, 1115, 1403, 1561, 1610, 2135, 2230, 2806, 3122, 4270, 5129, 7015, 7805, 9821, 10258, 13603, 14030, 15610, 19642, 25645, 27206, 35903, 49105, 51290, 68015, 71806, 95221, 98210, 136030, 179515, 190442, 312869, 359030, 476105, 625738, 952210, 1564345, 2190083, 3128690, 4380166, 10950415, 21900830]

約数ペア:

[(1, 21900830), (2, 10950415), (5, 4380166), (7, 3128690), (10, 2190083), (14, 1564345), (23, 952210), (35, 625738), (46, 476105), (61, 359030), (70, 312869), (115, 190442), (122, 179515), (161, 136030), (223, 98210), (230, 95221), (305, 71806), (322, 68015), (427, 51290), (446, 49105), (610, 35903), (805, 27206), (854, 25645), (1115, 19642), (1403, 15610), (1561, 14030), (1610, 13603), (2135, 10258), (2230, 9821), (2806, 7805), (3122, 7015), (4270, 5129)]