28131120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:547

約数の個数: 120

約数和(自身を含む): 95752800

約数和(自身を除く): 67621680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 89, 90, 120, 144, 178, 180, 240, 267, 356, 360, 439, 445, 534, 712, 720, 801, 878, 890, 1068, 1317, 1335, 1424, 1602, 1756, 1780, 2136, 2195, 2634, 2670, 3204, 3512, 3560, 3951, 4005, 4272, 4390, 5268, 5340, 6408, 6585, 7024, 7120, 7902, 8010, 8780, 10536, 10680, 12816, 13170, 15804, 16020, 17560, 19755, 21072, 21360, 26340, 31608, 32040, 35120, 39071, 39510, 52680, 63216, 64080, 78142, 79020, 105360, 117213, 156284, 158040, 195355, 234426, 312568, 316080, 351639, 390710, 468852, 586065, 625136, 703278, 781420, 937704, 1172130, 1406556, 1562840, 1758195, 1875408, 2344260, 2813112, 3125680, 3516390, 4688520, 5626224, 7032780, 9377040, 14065560, 28131120]

約数ペア:

[(1, 28131120), (2, 14065560), (3, 9377040), (4, 7032780), (5, 5626224), (6, 4688520), (8, 3516390), (9, 3125680), (10, 2813112), (12, 2344260), (15, 1875408), (16, 1758195), (18, 1562840), (20, 1406556), (24, 1172130), (30, 937704), (36, 781420), (40, 703278), (45, 625136), (48, 586065), (60, 468852), (72, 390710), (80, 351639), (89, 316080), (90, 312568), (120, 234426), (144, 195355), (178, 158040), (180, 156284), (240, 117213), (267, 105360), (356, 79020), (360, 78142), (439, 64080), (445, 63216), (534, 52680), (712, 39510), (720, 39071), (801, 35120), (878, 32040), (890, 31608), (1068, 26340), (1317, 21360), (1335, 21072), (1424, 19755), (1602, 17560), (1756, 16020), (1780, 15804), (2136, 13170), (2195, 12816), (2634, 10680), (2670, 10536), (3204, 8780), (3512, 8010), (3560, 7902), (3951, 7120), (4005, 7024), (4272, 6585), (4390, 6408), (5268, 5340)]