646380

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{19}}^1$

素因数の和:50

約数の個数: 144

約数和(自身を含む): 2446080

約数和(自身を除く): 1799700

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 54, 57, 60, 63, 70, 76, 81, 84, 90, 95, 105, 108, 114, 126, 133, 135, 140, 162, 171, 180, 189, 190, 210, 228, 243, 252, 266, 270, 285, 315, 324, 342, 378, 380, 399, 405, 420, 486, 513, 532, 540, 567, 570, 630, 665, 684, 756, 798, 810, 855, 945, 972, 1026, 1134, 1140, 1197, 1215, 1260, 1330, 1539, 1596, 1620, 1701, 1710, 1890, 1995, 2052, 2268, 2394, 2430, 2565, 2660, 2835, 3078, 3402, 3420, 3591, 3780, 3990, 4617, 4788, 4860, 5130, 5670, 5985, 6156, 6804, 7182, 7695, 7980, 8505, 9234, 10260, 10773, 11340, 11970, 14364, 15390, 17010, 17955, 18468, 21546, 23085, 23940, 30780, 32319, 34020, 35910, 43092, 46170, 53865, 64638, 71820, 92340, 107730, 129276, 161595, 215460, 323190, 646380]

約数ペア:

[(1, 646380), (2, 323190), (3, 215460), (4, 161595), (5, 129276), (6, 107730), (7, 92340), (9, 71820), (10, 64638), (12, 53865), (14, 46170), (15, 43092), (18, 35910), (19, 34020), (20, 32319), (21, 30780), (27, 23940), (28, 23085), (30, 21546), (35, 18468), (36, 17955), (38, 17010), (42, 15390), (45, 14364), (54, 11970), (57, 11340), (60, 10773), (63, 10260), (70, 9234), (76, 8505), (81, 7980), (84, 7695), (90, 7182), (95, 6804), (105, 6156), (108, 5985), (114, 5670), (126, 5130), (133, 4860), (135, 4788), (140, 4617), (162, 3990), (171, 3780), (180, 3591), (189, 3420), (190, 3402), (210, 3078), (228, 2835), (243, 2660), (252, 2565), (266, 2430), (270, 2394), (285, 2268), (315, 2052), (324, 1995), (342, 1890), (378, 1710), (380, 1701), (399, 1620), (405, 1596), (420, 1539), (486, 1330), (513, 1260), (532, 1215), (540, 1197), (567, 1140), (570, 1134), (630, 1026), (665, 972), (684, 945), (756, 855), (798, 810)]