28778540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:415

約数の個数: 96

約数和(自身を含む): 75264000

約数和(自身を除く): 46485460

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 62, 70, 76, 95, 124, 133, 140, 155, 190, 217, 266, 310, 349, 380, 434, 532, 589, 620, 665, 698, 868, 1085, 1178, 1330, 1396, 1745, 2170, 2356, 2443, 2660, 2945, 3490, 4123, 4340, 4886, 5890, 6631, 6980, 8246, 9772, 10819, 11780, 12215, 13262, 16492, 20615, 21638, 24430, 26524, 33155, 41230, 43276, 46417, 48860, 54095, 66310, 75733, 82460, 92834, 108190, 132620, 151466, 185668, 205561, 216380, 232085, 302932, 378665, 411122, 464170, 757330, 822244, 928340, 1027805, 1438927, 1514660, 2055610, 2877854, 4111220, 5755708, 7194635, 14389270, 28778540]

約数ペア:

[(1, 28778540), (2, 14389270), (4, 7194635), (5, 5755708), (7, 4111220), (10, 2877854), (14, 2055610), (19, 1514660), (20, 1438927), (28, 1027805), (31, 928340), (35, 822244), (38, 757330), (62, 464170), (70, 411122), (76, 378665), (95, 302932), (124, 232085), (133, 216380), (140, 205561), (155, 185668), (190, 151466), (217, 132620), (266, 108190), (310, 92834), (349, 82460), (380, 75733), (434, 66310), (532, 54095), (589, 48860), (620, 46417), (665, 43276), (698, 41230), (868, 33155), (1085, 26524), (1178, 24430), (1330, 21638), (1396, 20615), (1745, 16492), (2170, 13262), (2356, 12215), (2443, 11780), (2660, 10819), (2945, 9772), (3490, 8246), (4123, 6980), (4340, 6631), (4886, 5890)]