78412740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 258552000

約数和(自身を除く): 180139260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 149, 179, 196, 210, 245, 294, 298, 358, 420, 447, 490, 537, 588, 596, 716, 735, 745, 894, 895, 980, 1043, 1074, 1253, 1470, 1490, 1788, 1790, 2086, 2148, 2235, 2506, 2685, 2940, 2980, 3129, 3580, 3759, 4172, 4470, 5012, 5215, 5370, 6258, 6265, 7301, 7518, 8771, 8940, 10430, 10740, 12516, 12530, 14602, 15036, 15645, 17542, 18795, 20860, 21903, 25060, 26313, 26671, 29204, 31290, 35084, 36505, 37590, 43806, 43855, 52626, 53342, 62580, 73010, 75180, 80013, 87612, 87710, 105252, 106684, 109515, 131565, 133355, 146020, 160026, 175420, 186697, 219030, 263130, 266710, 320052, 373394, 400065, 438060, 526260, 533420, 560091, 746788, 800130, 933485, 1120182, 1306879, 1600260, 1866970, 2240364, 2613758, 2800455, 3733940, 3920637, 5227516, 5600910, 6534395, 7841274, 11201820, 13068790, 15682548, 19603185, 26137580, 39206370, 78412740]

約数ペア:

[(1, 78412740), (2, 39206370), (3, 26137580), (4, 19603185), (5, 15682548), (6, 13068790), (7, 11201820), (10, 7841274), (12, 6534395), (14, 5600910), (15, 5227516), (20, 3920637), (21, 3733940), (28, 2800455), (30, 2613758), (35, 2240364), (42, 1866970), (49, 1600260), (60, 1306879), (70, 1120182), (84, 933485), (98, 800130), (105, 746788), (140, 560091), (147, 533420), (149, 526260), (179, 438060), (196, 400065), (210, 373394), (245, 320052), (294, 266710), (298, 263130), (358, 219030), (420, 186697), (447, 175420), (490, 160026), (537, 146020), (588, 133355), (596, 131565), (716, 109515), (735, 106684), (745, 105252), (894, 87710), (895, 87612), (980, 80013), (1043, 75180), (1074, 73010), (1253, 62580), (1470, 53342), (1490, 52626), (1788, 43855), (1790, 43806), (2086, 37590), (2148, 36505), (2235, 35084), (2506, 31290), (2685, 29204), (2940, 26671), (2980, 26313), (3129, 25060), (3580, 21903), (3759, 20860), (4172, 18795), (4470, 17542), (5012, 15645), (5215, 15036), (5370, 14602), (6258, 12530), (6265, 12516), (7301, 10740), (7518, 10430), (8771, 8940)]