21293880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2909}}^1$

素因数の和:2984

約数の個数: 64

約数和(自身を含む): 64951200

約数和(自身を除く): 43657320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2909, 3660, 5818, 7320, 8727, 11636, 14545, 17454, 23272, 29090, 34908, 43635, 58180, 69816, 87270, 116360, 174540, 177449, 349080, 354898, 532347, 709796, 887245, 1064694, 1419592, 1774490, 2129388, 2661735, 3548980, 4258776, 5323470, 7097960, 10646940, 21293880]

約数ペア:

[(1, 21293880), (2, 10646940), (3, 7097960), (4, 5323470), (5, 4258776), (6, 3548980), (8, 2661735), (10, 2129388), (12, 1774490), (15, 1419592), (20, 1064694), (24, 887245), (30, 709796), (40, 532347), (60, 354898), (61, 349080), (120, 177449), (122, 174540), (183, 116360), (244, 87270), (305, 69816), (366, 58180), (488, 43635), (610, 34908), (732, 29090), (915, 23272), (1220, 17454), (1464, 14545), (1830, 11636), (2440, 8727), (2909, 7320), (3660, 5818)]