21853860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{853}}^1$

素因数の和:933

約数の個数: 96

約数和(自身を含む): 71162112

約数和(自身を除く): 49308252

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 853, 854, 915, 1220, 1281, 1706, 1708, 1830, 2135, 2559, 2562, 3412, 3660, 4265, 4270, 5118, 5124, 5971, 6405, 8530, 8540, 10236, 11942, 12795, 12810, 17060, 17913, 23884, 25590, 25620, 29855, 35826, 51180, 52033, 59710, 71652, 89565, 104066, 119420, 156099, 179130, 208132, 260165, 312198, 358260, 364231, 520330, 624396, 728462, 780495, 1040660, 1092693, 1456924, 1560990, 1821155, 2185386, 3121980, 3642310, 4370772, 5463465, 7284620, 10926930, 21853860]

約数ペア:

[(1, 21853860), (2, 10926930), (3, 7284620), (4, 5463465), (5, 4370772), (6, 3642310), (7, 3121980), (10, 2185386), (12, 1821155), (14, 1560990), (15, 1456924), (20, 1092693), (21, 1040660), (28, 780495), (30, 728462), (35, 624396), (42, 520330), (60, 364231), (61, 358260), (70, 312198), (84, 260165), (105, 208132), (122, 179130), (140, 156099), (183, 119420), (210, 104066), (244, 89565), (305, 71652), (366, 59710), (420, 52033), (427, 51180), (610, 35826), (732, 29855), (853, 25620), (854, 25590), (915, 23884), (1220, 17913), (1281, 17060), (1706, 12810), (1708, 12795), (1830, 11942), (2135, 10236), (2559, 8540), (2562, 8530), (3412, 6405), (3660, 5971), (4265, 5124), (4270, 5118)]