81961516

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1693}}^1$

素因数の和:1743

約数の個数: 72

約数和(自身を含む): 189253680

約数和(自身を除く): 107292164

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 49, 52, 76, 91, 98, 133, 182, 196, 247, 266, 364, 494, 532, 637, 931, 988, 1274, 1693, 1729, 1862, 2548, 3386, 3458, 3724, 6772, 6916, 11851, 12103, 22009, 23702, 24206, 32167, 44018, 47404, 48412, 64334, 82957, 88036, 128668, 154063, 165914, 225169, 308126, 331828, 418171, 450338, 616252, 836342, 900676, 1078441, 1576183, 1672684, 2156882, 2927197, 3152366, 4313764, 5854394, 6304732, 11708788, 20490379, 40980758, 81961516]

約数ペア:

[(1, 81961516), (2, 40980758), (4, 20490379), (7, 11708788), (13, 6304732), (14, 5854394), (19, 4313764), (26, 3152366), (28, 2927197), (38, 2156882), (49, 1672684), (52, 1576183), (76, 1078441), (91, 900676), (98, 836342), (133, 616252), (182, 450338), (196, 418171), (247, 331828), (266, 308126), (364, 225169), (494, 165914), (532, 154063), (637, 128668), (931, 88036), (988, 82957), (1274, 64334), (1693, 48412), (1729, 47404), (1862, 44018), (2548, 32167), (3386, 24206), (3458, 23702), (3724, 22009), (6772, 12103), (6916, 11851)]