77961940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:174

約数の個数: 144

約数和(自身を含む): 206841600

約数和(自身を除く): 128879660

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 53, 70, 76, 79, 95, 98, 106, 133, 140, 158, 190, 196, 212, 245, 265, 266, 316, 371, 380, 395, 490, 530, 532, 553, 665, 742, 790, 931, 980, 1007, 1060, 1106, 1330, 1484, 1501, 1580, 1855, 1862, 2014, 2212, 2597, 2660, 2765, 3002, 3710, 3724, 3871, 4028, 4187, 4655, 5035, 5194, 5530, 6004, 7049, 7420, 7505, 7742, 8374, 9310, 10070, 10388, 10507, 11060, 12985, 14098, 15010, 15484, 16748, 18620, 19355, 20140, 20935, 21014, 25970, 28196, 29309, 30020, 35245, 38710, 41870, 42028, 49343, 51940, 52535, 58618, 70490, 73549, 77420, 79553, 83740, 98686, 105070, 117236, 140980, 146545, 147098, 159106, 197372, 205163, 210140, 246715, 293090, 294196, 318212, 367745, 397765, 410326, 493430, 556871, 586180, 735490, 795530, 820652, 986860, 1025815, 1113742, 1470980, 1591060, 2051630, 2227484, 2784355, 3898097, 4103260, 5568710, 7796194, 11137420, 15592388, 19490485, 38980970, 77961940]

約数ペア:

[(1, 77961940), (2, 38980970), (4, 19490485), (5, 15592388), (7, 11137420), (10, 7796194), (14, 5568710), (19, 4103260), (20, 3898097), (28, 2784355), (35, 2227484), (38, 2051630), (49, 1591060), (53, 1470980), (70, 1113742), (76, 1025815), (79, 986860), (95, 820652), (98, 795530), (106, 735490), (133, 586180), (140, 556871), (158, 493430), (190, 410326), (196, 397765), (212, 367745), (245, 318212), (265, 294196), (266, 293090), (316, 246715), (371, 210140), (380, 205163), (395, 197372), (490, 159106), (530, 147098), (532, 146545), (553, 140980), (665, 117236), (742, 105070), (790, 98686), (931, 83740), (980, 79553), (1007, 77420), (1060, 73549), (1106, 70490), (1330, 58618), (1484, 52535), (1501, 51940), (1580, 49343), (1855, 42028), (1862, 41870), (2014, 38710), (2212, 35245), (2597, 30020), (2660, 29309), (2765, 28196), (3002, 25970), (3710, 21014), (3724, 20935), (3871, 20140), (4028, 19355), (4187, 18620), (4655, 16748), (5035, 15484), (5194, 15010), (5530, 14098), (6004, 12985), (7049, 11060), (7420, 10507), (7505, 10388), (7742, 10070), (8374, 9310)]