77981940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1301}}^1$

素因数の和:1359

約数の個数: 120

約数和(自身を含む): 251437032

約数和(自身を除く): 173455092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 81, 90, 108, 111, 135, 148, 162, 180, 185, 222, 270, 324, 333, 370, 405, 444, 540, 555, 666, 740, 810, 999, 1110, 1301, 1332, 1620, 1665, 1998, 2220, 2602, 2997, 3330, 3903, 3996, 4995, 5204, 5994, 6505, 6660, 7806, 9990, 11709, 11988, 13010, 14985, 15612, 19515, 19980, 23418, 26020, 29970, 35127, 39030, 46836, 48137, 58545, 59940, 70254, 78060, 96274, 105381, 117090, 140508, 144411, 175635, 192548, 210762, 234180, 240685, 288822, 351270, 421524, 433233, 481370, 526905, 577644, 702540, 722055, 866466, 962740, 1053810, 1299699, 1444110, 1732932, 2107620, 2166165, 2599398, 2888220, 3899097, 4332330, 5198796, 6498495, 7798194, 8664660, 12996990, 15596388, 19495485, 25993980, 38990970, 77981940]

約数ペア:

[(1, 77981940), (2, 38990970), (3, 25993980), (4, 19495485), (5, 15596388), (6, 12996990), (9, 8664660), (10, 7798194), (12, 6498495), (15, 5198796), (18, 4332330), (20, 3899097), (27, 2888220), (30, 2599398), (36, 2166165), (37, 2107620), (45, 1732932), (54, 1444110), (60, 1299699), (74, 1053810), (81, 962740), (90, 866466), (108, 722055), (111, 702540), (135, 577644), (148, 526905), (162, 481370), (180, 433233), (185, 421524), (222, 351270), (270, 288822), (324, 240685), (333, 234180), (370, 210762), (405, 192548), (444, 175635), (540, 144411), (555, 140508), (666, 117090), (740, 105381), (810, 96274), (999, 78060), (1110, 70254), (1301, 59940), (1332, 58545), (1620, 48137), (1665, 46836), (1998, 39030), (2220, 35127), (2602, 29970), (2997, 26020), (3330, 23418), (3903, 19980), (3996, 19515), (4995, 15612), (5204, 14985), (5994, 13010), (6505, 11988), (6660, 11709), (7806, 9990)]