305978440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1409}}^1$

素因数の和:1570

約数の個数: 64

約数和(自身を含む): 708102000

約数和(自身を除く): 402123560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 89, 122, 178, 244, 305, 356, 445, 488, 610, 712, 890, 1220, 1409, 1780, 2440, 2818, 3560, 5429, 5636, 7045, 10858, 11272, 14090, 21716, 27145, 28180, 43432, 54290, 56360, 85949, 108580, 125401, 171898, 217160, 250802, 343796, 429745, 501604, 627005, 687592, 859490, 1003208, 1254010, 1718980, 2508020, 3437960, 5016040, 7649461, 15298922, 30597844, 38247305, 61195688, 76494610, 152989220, 305978440]

約数ペア:

[(1, 305978440), (2, 152989220), (4, 76494610), (5, 61195688), (8, 38247305), (10, 30597844), (20, 15298922), (40, 7649461), (61, 5016040), (89, 3437960), (122, 2508020), (178, 1718980), (244, 1254010), (305, 1003208), (356, 859490), (445, 687592), (488, 627005), (610, 501604), (712, 429745), (890, 343796), (1220, 250802), (1409, 217160), (1780, 171898), (2440, 125401), (2818, 108580), (3560, 85949), (5429, 56360), (5636, 54290), (7045, 43432), (10858, 28180), (11272, 27145), (14090, 21716)]