661777980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{30553}}^1$

素因数の和:30603

約数の個数: 72

約数和(自身を含む): 1955700432

約数和(自身を除く): 1293922452

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 1083, 1140, 1444, 1805, 2166, 3610, 4332, 5415, 7220, 10830, 21660, 30553, 61106, 91659, 122212, 152765, 183318, 305530, 366636, 458295, 580507, 611060, 916590, 1161014, 1741521, 1833180, 2322028, 2902535, 3483042, 5805070, 6966084, 8707605, 11029633, 11610140, 17415210, 22059266, 33088899, 34830420, 44118532, 55148165, 66177798, 110296330, 132355596, 165444495, 220592660, 330888990, 661777980]

約数ペア:

[(1, 661777980), (2, 330888990), (3, 220592660), (4, 165444495), (5, 132355596), (6, 110296330), (10, 66177798), (12, 55148165), (15, 44118532), (19, 34830420), (20, 33088899), (30, 22059266), (38, 17415210), (57, 11610140), (60, 11029633), (76, 8707605), (95, 6966084), (114, 5805070), (190, 3483042), (228, 2902535), (285, 2322028), (361, 1833180), (380, 1741521), (570, 1161014), (722, 916590), (1083, 611060), (1140, 580507), (1444, 458295), (1805, 366636), (2166, 305530), (3610, 183318), (4332, 152765), (5415, 122212), (7220, 91659), (10830, 61106), (21660, 30553)]