721020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 2062368

約数和(自身を除く): 1341348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 197, 244, 305, 366, 394, 591, 610, 732, 788, 915, 985, 1182, 1220, 1830, 1970, 2364, 2955, 3660, 3940, 5910, 11820, 12017, 24034, 36051, 48068, 60085, 72102, 120170, 144204, 180255, 240340, 360510, 721020]

約数ペア:

[(1, 721020), (2, 360510), (3, 240340), (4, 180255), (5, 144204), (6, 120170), (10, 72102), (12, 60085), (15, 48068), (20, 36051), (30, 24034), (60, 12017), (61, 11820), (122, 5910), (183, 3940), (197, 3660), (244, 2955), (305, 2364), (366, 1970), (394, 1830), (591, 1220), (610, 1182), (732, 985), (788, 915)]