247709840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:821

約数の個数: 160

約数和(自身を含む): 716144640

約数和(自身を除く): 468434800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 56, 62, 70, 76, 80, 95, 112, 124, 133, 140, 152, 155, 190, 217, 248, 266, 280, 304, 310, 380, 434, 496, 532, 560, 589, 620, 665, 751, 760, 868, 1064, 1085, 1178, 1240, 1330, 1502, 1520, 1736, 2128, 2170, 2356, 2480, 2660, 2945, 3004, 3472, 3755, 4123, 4340, 4712, 5257, 5320, 5890, 6008, 7510, 8246, 8680, 9424, 10514, 10640, 11780, 12016, 14269, 15020, 16492, 17360, 20615, 21028, 23281, 23560, 26285, 28538, 30040, 32984, 41230, 42056, 46562, 47120, 52570, 57076, 60080, 65968, 71345, 82460, 84112, 93124, 99883, 105140, 114152, 116405, 142690, 162967, 164920, 186248, 199766, 210280, 228304, 232810, 285380, 325934, 329840, 372496, 399532, 420560, 442339, 465620, 499415, 570760, 651868, 799064, 814835, 884678, 931240, 998830, 1141520, 1303736, 1598128, 1629670, 1769356, 1862480, 1997660, 2211695, 2607472, 3096373, 3259340, 3538712, 3995320, 4423390, 6192746, 6518680, 7077424, 7990640, 8846780, 12385492, 13037360, 15481865, 17693560, 24770984, 30963730, 35387120, 49541968, 61927460, 123854920, 247709840]

約数ペア:

[(1, 247709840), (2, 123854920), (4, 61927460), (5, 49541968), (7, 35387120), (8, 30963730), (10, 24770984), (14, 17693560), (16, 15481865), (19, 13037360), (20, 12385492), (28, 8846780), (31, 7990640), (35, 7077424), (38, 6518680), (40, 6192746), (56, 4423390), (62, 3995320), (70, 3538712), (76, 3259340), (80, 3096373), (95, 2607472), (112, 2211695), (124, 1997660), (133, 1862480), (140, 1769356), (152, 1629670), (155, 1598128), (190, 1303736), (217, 1141520), (248, 998830), (266, 931240), (280, 884678), (304, 814835), (310, 799064), (380, 651868), (434, 570760), (496, 499415), (532, 465620), (560, 442339), (589, 420560), (620, 399532), (665, 372496), (751, 329840), (760, 325934), (868, 285380), (1064, 232810), (1085, 228304), (1178, 210280), (1240, 199766), (1330, 186248), (1502, 164920), (1520, 162967), (1736, 142690), (2128, 116405), (2170, 114152), (2356, 105140), (2480, 99883), (2660, 93124), (2945, 84112), (3004, 82460), (3472, 71345), (3755, 65968), (4123, 60080), (4340, 57076), (4712, 52570), (5257, 47120), (5320, 46562), (5890, 42056), (6008, 41230), (7510, 32984), (8246, 30040), (8680, 28538), (9424, 26285), (10514, 23560), (10640, 23281), (11780, 21028), (12016, 20615), (14269, 17360), (15020, 16492)]