81376240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 160

約数和(自身を含む): 225699840

約数和(自身を除く): 144323600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 38, 40, 44, 55, 62, 76, 80, 88, 95, 110, 124, 152, 155, 157, 176, 190, 209, 220, 248, 304, 310, 314, 341, 380, 418, 440, 496, 589, 620, 628, 682, 760, 785, 836, 880, 1045, 1178, 1240, 1256, 1364, 1520, 1570, 1672, 1705, 1727, 2090, 2356, 2480, 2512, 2728, 2945, 2983, 3140, 3344, 3410, 3454, 4180, 4712, 4867, 5456, 5890, 5966, 6280, 6479, 6820, 6908, 8360, 8635, 9424, 9734, 11780, 11932, 12560, 12958, 13640, 13816, 14915, 16720, 17270, 19468, 23560, 23864, 24335, 25916, 27280, 27632, 29830, 32395, 32813, 34540, 38936, 47120, 47728, 48670, 51832, 53537, 59660, 64790, 65626, 69080, 77872, 92473, 97340, 103664, 107074, 119320, 129580, 131252, 138160, 164065, 184946, 194680, 214148, 238640, 259160, 262504, 267685, 328130, 369892, 389360, 428296, 462365, 518320, 525008, 535370, 656260, 739784, 856592, 924730, 1017203, 1070740, 1312520, 1479568, 1849460, 2034406, 2141480, 2625040, 3698920, 4068812, 4282960, 5086015, 7397840, 8137624, 10172030, 16275248, 20344060, 40688120, 81376240]

約数ペア:

[(1, 81376240), (2, 40688120), (4, 20344060), (5, 16275248), (8, 10172030), (10, 8137624), (11, 7397840), (16, 5086015), (19, 4282960), (20, 4068812), (22, 3698920), (31, 2625040), (38, 2141480), (40, 2034406), (44, 1849460), (55, 1479568), (62, 1312520), (76, 1070740), (80, 1017203), (88, 924730), (95, 856592), (110, 739784), (124, 656260), (152, 535370), (155, 525008), (157, 518320), (176, 462365), (190, 428296), (209, 389360), (220, 369892), (248, 328130), (304, 267685), (310, 262504), (314, 259160), (341, 238640), (380, 214148), (418, 194680), (440, 184946), (496, 164065), (589, 138160), (620, 131252), (628, 129580), (682, 119320), (760, 107074), (785, 103664), (836, 97340), (880, 92473), (1045, 77872), (1178, 69080), (1240, 65626), (1256, 64790), (1364, 59660), (1520, 53537), (1570, 51832), (1672, 48670), (1705, 47728), (1727, 47120), (2090, 38936), (2356, 34540), (2480, 32813), (2512, 32395), (2728, 29830), (2945, 27632), (2983, 27280), (3140, 25916), (3344, 24335), (3410, 23864), (3454, 23560), (4180, 19468), (4712, 17270), (4867, 16720), (5456, 14915), (5890, 13816), (5966, 13640), (6280, 12958), (6479, 12560), (6820, 11932), (6908, 11780), (8360, 9734), (8635, 9424)]