28070980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 72495360

約数和(自身を除く): 44424380

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 61, 70, 76, 95, 122, 133, 140, 173, 190, 244, 266, 305, 346, 380, 427, 532, 610, 665, 692, 854, 865, 1159, 1211, 1220, 1330, 1708, 1730, 2135, 2318, 2422, 2660, 3287, 3460, 4270, 4636, 4844, 5795, 6055, 6574, 8113, 8540, 10553, 11590, 12110, 13148, 16226, 16435, 21106, 23009, 23180, 24220, 32452, 32870, 40565, 42212, 46018, 52765, 65740, 73871, 81130, 92036, 105530, 115045, 147742, 162260, 200507, 211060, 230090, 295484, 369355, 401014, 460180, 738710, 802028, 1002535, 1403549, 1477420, 2005070, 2807098, 4010140, 5614196, 7017745, 14035490, 28070980]

約数ペア:

[(1, 28070980), (2, 14035490), (4, 7017745), (5, 5614196), (7, 4010140), (10, 2807098), (14, 2005070), (19, 1477420), (20, 1403549), (28, 1002535), (35, 802028), (38, 738710), (61, 460180), (70, 401014), (76, 369355), (95, 295484), (122, 230090), (133, 211060), (140, 200507), (173, 162260), (190, 147742), (244, 115045), (266, 105530), (305, 92036), (346, 81130), (380, 73871), (427, 65740), (532, 52765), (610, 46018), (665, 42212), (692, 40565), (854, 32870), (865, 32452), (1159, 24220), (1211, 23180), (1220, 23009), (1330, 21106), (1708, 16435), (1730, 16226), (2135, 13148), (2318, 12110), (2422, 11590), (2660, 10553), (3287, 8540), (3460, 8113), (4270, 6574), (4636, 6055), (4844, 5795)]