20005560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:989

約数の個数: 96

約数和(自身を含む): 66156480

約数和(自身を除く): 46150920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 61, 72, 90, 120, 122, 180, 183, 244, 305, 360, 366, 488, 549, 610, 732, 911, 915, 1098, 1220, 1464, 1822, 1830, 2196, 2440, 2733, 2745, 3644, 3660, 4392, 4555, 5466, 5490, 7288, 7320, 8199, 9110, 10932, 10980, 13665, 16398, 18220, 21864, 21960, 27330, 32796, 36440, 40995, 54660, 55571, 65592, 81990, 109320, 111142, 163980, 166713, 222284, 277855, 327960, 333426, 444568, 500139, 555710, 666852, 833565, 1000278, 1111420, 1333704, 1667130, 2000556, 2222840, 2500695, 3334260, 4001112, 5001390, 6668520, 10002780, 20005560]

約数ペア:

[(1, 20005560), (2, 10002780), (3, 6668520), (4, 5001390), (5, 4001112), (6, 3334260), (8, 2500695), (9, 2222840), (10, 2000556), (12, 1667130), (15, 1333704), (18, 1111420), (20, 1000278), (24, 833565), (30, 666852), (36, 555710), (40, 500139), (45, 444568), (60, 333426), (61, 327960), (72, 277855), (90, 222284), (120, 166713), (122, 163980), (180, 111142), (183, 109320), (244, 81990), (305, 65592), (360, 55571), (366, 54660), (488, 40995), (549, 36440), (610, 32796), (732, 27330), (911, 21960), (915, 21864), (1098, 18220), (1220, 16398), (1464, 13665), (1822, 10980), (1830, 10932), (2196, 9110), (2440, 8199), (2733, 7320), (2745, 7288), (3644, 5490), (3660, 5466), (4392, 4555)]