77999180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 206841600

約数和(自身を除く): 128842420

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 59, 70, 71, 76, 95, 98, 118, 133, 140, 142, 190, 196, 236, 245, 266, 284, 295, 355, 380, 413, 490, 497, 532, 590, 665, 710, 826, 931, 980, 994, 1121, 1180, 1330, 1349, 1420, 1652, 1862, 1988, 2065, 2242, 2485, 2660, 2698, 2891, 3479, 3724, 4130, 4189, 4484, 4655, 4970, 5396, 5605, 5782, 6745, 6958, 7847, 8260, 8378, 9310, 9443, 9940, 11210, 11564, 13490, 13916, 14455, 15694, 16756, 17395, 18620, 18886, 20945, 22420, 26980, 28910, 29323, 31388, 34790, 37772, 39235, 41890, 47215, 54929, 57820, 58646, 66101, 69580, 78470, 79591, 83780, 94430, 109858, 117292, 132202, 146615, 156940, 159182, 188860, 205261, 219716, 264404, 274645, 293230, 318364, 330505, 397955, 410522, 549290, 557137, 586460, 661010, 795910, 821044, 1026305, 1098580, 1114274, 1322020, 1591820, 2052610, 2228548, 2785685, 3899959, 4105220, 5571370, 7799918, 11142740, 15599836, 19499795, 38999590, 77999180]

約数ペア:

[(1, 77999180), (2, 38999590), (4, 19499795), (5, 15599836), (7, 11142740), (10, 7799918), (14, 5571370), (19, 4105220), (20, 3899959), (28, 2785685), (35, 2228548), (38, 2052610), (49, 1591820), (59, 1322020), (70, 1114274), (71, 1098580), (76, 1026305), (95, 821044), (98, 795910), (118, 661010), (133, 586460), (140, 557137), (142, 549290), (190, 410522), (196, 397955), (236, 330505), (245, 318364), (266, 293230), (284, 274645), (295, 264404), (355, 219716), (380, 205261), (413, 188860), (490, 159182), (497, 156940), (532, 146615), (590, 132202), (665, 117292), (710, 109858), (826, 94430), (931, 83780), (980, 79591), (994, 78470), (1121, 69580), (1180, 66101), (1330, 58646), (1349, 57820), (1420, 54929), (1652, 47215), (1862, 41890), (1988, 39235), (2065, 37772), (2242, 34790), (2485, 31388), (2660, 29323), (2698, 28910), (2891, 26980), (3479, 22420), (3724, 20945), (4130, 18886), (4189, 18620), (4484, 17395), (4655, 16756), (4970, 15694), (5396, 14455), (5605, 13916), (5782, 13490), (6745, 11564), (6958, 11210), (7847, 9940), (8260, 9443), (8378, 9310)]