31985289

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 57886920

約数和(自身を除く): 25901631

約数列:

[1, 3, 7, 9, 21, 29, 41, 49, 61, 63, 87, 123, 147, 183, 203, 261, 287, 369, 427, 441, 549, 609, 861, 1189, 1281, 1421, 1769, 1827, 2009, 2501, 2583, 2989, 3567, 3843, 4263, 5307, 6027, 7503, 8323, 8967, 10701, 12383, 12789, 15921, 17507, 18081, 22509, 24969, 26901, 37149, 52521, 58261, 72529, 74907, 86681, 111447, 122549, 157563, 174783, 217587, 260043, 367647, 507703, 524349, 652761, 780129, 1102941, 1523109, 3553921, 4569327, 10661763, 31985289]

約数ペア:

[(1, 31985289), (3, 10661763), (7, 4569327), (9, 3553921), (21, 1523109), (29, 1102941), (41, 780129), (49, 652761), (61, 524349), (63, 507703), (87, 367647), (123, 260043), (147, 217587), (183, 174783), (203, 157563), (261, 122549), (287, 111447), (369, 86681), (427, 74907), (441, 72529), (549, 58261), (609, 52521), (861, 37149), (1189, 26901), (1281, 24969), (1421, 22509), (1769, 18081), (1827, 17507), (2009, 15921), (2501, 12789), (2583, 12383), (2989, 10701), (3567, 8967), (3843, 8323), (4263, 7503), (5307, 6027)]